1. science

    1) When an alkali metal is involved in a chemical reaction with a nonmetal, what charge will its atoms most likely form? 1- 2+ 1+ 2- 2) Which properties increase when moving down a group of the periodic table? Select all that apply. reactivity valence

    asked by help me please on December 11, 2018
  2. Chem - Elements

    I need help on identifying four elements. 1. a member of the same family as oxygen whose most stable ion contains 54 electrons. (Sulfur?) 2. member of alkali metal family whose most stable ion contains 36 electrons. (Cesium??) 3. noble gas with 18 protons

    asked by Salil on November 14, 2006
  3. chemistry

    Using the activity series, write a balanced chemical equation for the following reactions: 1. iron metal is added to a solution of copper (II) nitrate 2. zinc metal is added to a solution of magnesium sulfate 3. hydrobromic acid is added to tin metal 4.

    asked by Jessica on March 27, 2011
  4. chemistry

    Which of the following statements about alkali metals is true? alkali metals have full valence shells alkali metals form 1- cations alkali metals are very reactive alkali metals form 2- cations please help

    asked by Anonymous on August 29, 2017
  5. chemistry

    a) Describe how to determine if a reaction will be thermodynamically favorable. b) Describe what happens to the Gibbs Free Energy term when a chemical reaction is reversed. c) Describe how coupling reactions are used to drive an unfavorable chemical

    asked by Morgan on March 12, 2015
  6. general chem

    Using the activity series (Table 4.5), write balanced chemical equations for the following reactions. If no reaction occurs, simply write NR. (a) Nickel metal is added to a solution of copper (II) nitrate; (b) a solution of zinc nitrate is added to a

    asked by rob on October 9, 2011
  7. Chemistry

    An element that is malleable, ductile, and a good conductor of heat and electricity would be classified as a a)metalliod b)semimetal c)metal d)nonmetal

    asked by Thelma on July 23, 2010
  8. Physical Science

    Which of the following statements are true about chemical reactions? Check all that apply. A. Reactants are on the right when writing a chemical reaction. B. Products are produced in a reaction. C. Reactants are present at the end of a reaction. D.

    asked by jen on January 27, 2015
  9. integrated science

    please help me If the following elements were involved in a chemical reaction, which one would be most likely to form a cation? chlorine (Cl) nitrogen (N) potassium (K) fluorine (F) I think it is A.

    asked by matthew on December 19, 2018
  10. chemistry

    What is the difference between biochemical, pharmaceutical, and diagnostic chemical reactions in healthcare? What is a specific example that exists for each of these chemical reaction types above and why might it be of importance to healthcare

    asked by slomomo on May 16, 2014
  11. Physics

    Neutral metal sphere A, of mass 0.10kg, hangs from an insulating wire 2.0m long. An identical metal sphere B, with charge -q is brought into contact with sphere A. Sphere A goes 12 degrees away from Sphere B. Calculate the initial charge on Sphere B. Note:

    asked by Alex on May 3, 2008
  12. chem

    A 0.069 gram sample of a metal reacted with HCl and produced 45.31 mL of H 2 gas at 25¡ÆC and 1 atm pressure. The metal is known to react with HCl according to the following reaction, 2 M + 6 HCl > 2 MCl 3 + 3 H 2 What is the molar mass of the metal?

    asked by jhon on October 31, 2014
  13. Calculus

    A chemical reaction proceeds in such a way that after the first second, the amount of a certain chemical involved in the reaction changes at a rate that’s inversely proportional to the product of the mass of the chemical present (in grams) and the time

    asked by Sarah on October 10, 2019
  14. science

    If an element has a gray luster and can be drawn into a wire, is it a nonmetal, metal, gas, or an alloy?

    asked by sue on May 19, 2010
  15. Physics

    A small metal bead, labeled A, has a charge of 26 nC . It is touched to metal bead B, initially neutral, so that the two beads share the 26 nC charge, but not necessarily equally. When the two beads are then placed 5.0 cm apart, the force between them is

    asked by Sunny on September 10, 2017
  16. Chemistry

    What is true about the element francium (Fr, atomic number 87)? Choose all that apply. A) It has seven valence electrons. B) It is likely to form ionic bonds. C) It is in Period 7. D) It is nonmetal. E) It is a metal. I think it is B, C, and E?

    asked by Anonymous on February 28, 2014
  17. Chemistry

    How much work (in J) is involved in a chemical reaction if the volume decreases from 5.00 to 1.26 L against a constant pressure of 0.857 atm?

    asked by Dorian on February 23, 2018
  18. Chemistry-Dr.Bob

    Since most chemical reactions are conducted in containers open to the armisphere, why is the energy transfer associated with a chemical reaction generally expressed as the change in enthalpy? Is it because the enthalpy of reaction measures the change in

    asked by Sanaya on January 10, 2016
  19. chemistry

    Based on the chemical formula, what type of compound is sodium fluoride (NaF)? Why? Sodium fluoride is an ionic compound because it is composed of a positive and negative ion (metal and nonmetal). A metallic compound would have multiple metal atoms bonded

    asked by Kylee on November 11, 2019
  20. Physics

    A negative charge -Q is placed inside the cavity of a hollow metal solid. The outside of the solid is grounded. Q: Is there any excess charge induced on the inner surface of the piece of metal? A: Yes, +Q Q: Is there any excess charge on the outer surface

    asked by Sean on December 25, 2009
  21. chemistry

    Sulfuric acid is dripped onto samples of three metals: silver, =zinc, and aluminium a) Use the activity series to determine whether a reaction will occur with each metal b) Write a chemical equation for each reaction that occurs

    asked by Michelle on January 11, 2015
  22. Chemistry

    Using the activity series (Table 4.5), write balanced chemical equations for the following reactions. If no reaction occurs, simply write No Reaction. Chromium metal is immersed in an aqueous solution of cobalt(II) chloride.

    asked by Thomas on February 26, 2019
  23. chem PLEASE HELP

    WHO MADE THESE ATOMIC DISCOVERIES? An atom has a nucleus that is very small In a reaction, the mass of the products must equal the mass of the reactants. Electrons are negatively charge pieces of matter. An electron has a mass that is very small compared

    asked by Sal on April 14, 2011
  24. Physical Science ?

    1. Cooking requires continuous addition of energy to the chemical reactions that are taking place. The chemical reactions involved in cooking can be described as _____. 2. Measuring how quickly a reactant disappears is one way to measure the _____ of the

    asked by raychel on November 8, 2017
  25. chemistry

    Examine the scenario. Chemical Reaction A and Chemical Reaction B involve the same two reactants. Chemical Reaction A is performed in a hot container, while Chemical Reaction B is performed in a cold container. Which of the answer choices correctly

    asked by PLEASE help on September 5, 2017
  26. Chemistry

    I need help classifying these as physical and chemical properties! 1. sodium metal in chlorine gas releases luster. 2. sodium metal has a metallic silver luster. 3. sodium metal in water porduces hydrogen gas. 4. sodium metal melts to a liquid at 98

    asked by Emily Grossman on March 1, 2011
  27. chemistry

    an ezyme -catalysed reaction was carried out in a solution buffered with 0.05 M phosphate ph 7.2 . As a result of the reaction ,0.06M of acid was formed. (phosphoric acid has three pka values. The one required for this calculation is pka2=7.2). 1) what was

    asked by josh on January 12, 2016
  28. Chemisty

    When the oxide of generic metal M is heated at 25.0 °C, only a negligible amount of M is produced. MO2(s)M(s)+O2(g) DeltaS= 287.5 kJ/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What is the

    asked by ACDub on March 30, 2014
  29. science

    dr. halite combined sodium metal with chlorine gas to make sodium chlorine (table salt). The chemical reaction used up all of the metal and sll of the gas. If dr halite made 116 g of table salt and started with 68 g of chlorine gas, then how many grams of

    asked by artie on April 7, 2013
  30. chemistry

    All of the lanthanide metals react with HCl to form compounds having the formula MCl2,MCl3,or MCl4 (where M represents the metallic element). Each metal forms a single compound. A chemist has .250g sample of a transition metal, and wishes to identify the

    asked by T on February 9, 2011
  31. Chemistry

    Why is the first ionization energy of a nonmetal much higher than that of an alkali metal in its same period?

    asked by Ciaria on March 3, 2015
  32. chemistry

    Alkali metals react with water to form hydrogen gas and the hydroxide of the metal. When 3.55 grams of an alkali metal reacts with excess water, 1020ml of hydrogen gas, measured at STP, are evolved. What is the alkali metal?

    asked by gina on December 6, 2010
  33. Chemistry

    How did the metal atoms become ions? Metal atoms became ions by losing electrons to form positively charged ions(cations). How did the nonmetal atoms become ions? Nonmetal atoms became ions by gaining electrons to form negative ions(anions).

    asked by Damon on July 8, 2010
  34. gen chem

    A nuclear reaction, such as the transmutation of uranium-238 to a stable isotope lead-206, involves exothermic and endothermic processes. In this reaction, is there any physical and chemical changes involved?

    asked by Anonymous on August 8, 2010
  35. chemistry

    sodium metal reacts with hydrogen gas to yield solid sodium hydride ( NaH ). A reaction mixture contains 10.00 g sodium metal and 0.235 g of hydrogen gas. write a balanced chemical equation for this reaction? what is your limiting reactant? what is your

    asked by Sofia on July 19, 2018
  36. analytical chemistry

    chemical equilibria involved in precipitation reaction

    asked by rose on April 22, 2013
  37. Chemistry

    In the reaction of 2.75 g of magnesium metal with excess hydrochloric acid, what volume of hydrogen gas will be produced by the reaction if the lab occurs at 25.0oC and 765 torr? (Hint: write a balanced chemical reaction first and do stoichiometry, then

    asked by Dee on April 8, 2020
  38. Chemistry

    This has to do with the reactivity series for metals (K,Na,Ca,Mg,Al,Zn,Fe,Pb,Cu,Au,Ag) Which metal is most likely to undergo the conversion M(s)->M(n+)(aq)+ne- What type of reaction is this?-oxidation ? Which metal ion is most likely to undergo the

    asked by Anonymous on March 5, 2008
  39. Chemistry

    Can somebody check my answers 1. If a small piece of sodium is dropped into water, it begins to react, forming hydrogen gas and sodium hydroxide. In the equation, 2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g), the sodium hydroxide that is formed is a A.

    asked by Amanda on August 26, 2011
  40. Science

    Please summarize this. I got it from a website and im doing my notecards. Im not trying to plagiarize, Im just not a science person. Please just summarize it so I can just understand it so I can explain it in my own words: The light reaction happens in the

    asked by Losa on October 14, 2013
  41. Physics- Energy Released In Chemical Reaction

    The reaction between two hydrogen isotopes is shown below: 2H + 3H → 4He + n + energy released The energy released in this reaction is: a.equal to that in a fission reaction b.equal to that in a chemical reaction. c.less than that in a chemical reaction.

    asked by MM on December 15, 2016
  42. Chemistry

    Magnesium oxide can be made by heating magnesium metal in the presence of oxygen. The balanced equation for the reaction is: 2Mg(s)+O2(g)→2MgO(s) When 10.1 g of Mg are allowed to react with 10.5 g of O2, 14.5 g of MgO are collected. a) Determine the

    asked by Beth on October 19, 2016
  43. Science

    1.what chemical properties of nail polish remover makes it dangerous? 2.Surgeons sometimes use metal plates and screws to hold broken bones together. What chemical properties do you think the metal should have?

    asked by Brianna on September 17, 2014
  44. chemistry

    Write the balanced chemical reaction for the rusting of iron? the acidic vinegar dissolved a protective coating off the steel wool, allowing the oxidation of the steel to begin. This process is called rusting. In this reaction, iron(III) is combined with

    asked by Rox on April 23, 2007
  45. chemistry

    potassium-a metal that catches fire whet it reacts with water, chlorine-a green poisonous gas bromine-a reddish brown liquid lithium-the least reactive of the alkali metals neon-an nonreactive gas iron-a metal with very high melting point

    asked by chelsea on October 13, 2010
  46. chem

    Which shows the greatest metallic character? -Na -K -Rb -Cs Also, What ions are very important for the proper functioning of biologic systems such as nerves and muscles? --oxygen ions --nitride ions --alkali metal ions --alkaline earth metal ions

    asked by DavidG on May 2, 2007
  47. Chemistry

    In the reaction of AL metal with aqueous potassium hydroxide, what type of reaction is occurring? -REDOX, Al metal is being reduced or -REDOX, Al metal is being oxidized.

    asked by Adam R on August 13, 2009
  48. chemistry

    what are some the different types of chemical reactions that occur on a daily basis our lives? wouldnt there be many? eating, taking medications, would emotion be or cause chemical reaction? All of the above. Add breathing. Don't forget the cars we drive,

    asked by key on February 14, 2007
  49. Chemistry

    When the oxide of generic metal M is heated at 25.0 °C, only a negligible amount of M is produced. O2M(s) ----> M(s) +O2(g) Delta G^o = 290.3 kJ/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous.

    asked by Janavi on March 23, 2014
  50. Chemistry

    Can somebody help me with this question? Zinc metal is placed in a solution of copper ions and undergoes an oxidation-reduction reaction. Which direction is the spontaneous reaction? Zn metal goes into solution. Cu(II) ions come out. Zn + Cu+2 ==> Zn+2 +

    asked by Lisa on February 10, 2007
  51. Chemistry

    What is the difference between a chemical change and a chemical reaction?? My answer: A chemical change leads to a solidifed chemical reaction but more or less they are the same thing because it's a change in which one or more pure substances are converted

    asked by Sam on September 6, 2015
  52. Chemistry

    Calculate the mass of silver metal (Ag) produced from the reaction of 5.58 grams of copper metal (Cu) according to the following reaction: Cu(s) + 2AgNO3(aq) --> Cu(NO3)2(aq) + 2Ag(s)

    asked by Carly on February 27, 2011
  53. chemistry

    a 0.2000 grams sample of aluminum metal is added to a solution containing 1.0000grams of an unknown compound made of platinum and chloride ion. the reaction results in the formation of aluminum chloride and platinum metal. when the reaction is complete,

    asked by Anonymous on March 3, 2014
  54. Chemistry

    a 4.000grams sample of aluminum metal is added to a solution containing 5.000grams of dissolved iron chloride. the reaction results in the formation of aluminum chloride and metallic iron. when the reaction is complete, unreacted aluminum remains, and this

    asked by Anonymous on March 26, 2014
  55. science

    What is true about the element francium(Fr,atomic number 87)? Choose all that apply. a. it has 7 valence electrons b. it is likely to form ionic bonds c. it is a nonmetal d. it is in period 7 e. it is a metal Is the answer a,d,e?

    asked by Anonymous on October 21, 2014
  56. PLEASE read over essay

    I did this for chemistry. Are the examples and grammar correct? THANK YOU SO MUCH TO WHOEVER ACTUALLY TAKES THE TIME TO READ THIS I LOVE YOU OMG. Naming Chemical Compounds By: Bryce R The periodic table is made up of the most simplest and complex elements.

    asked by Bryce on October 4, 2012
  57. Chemistry

    1. Which of the following is one way to prevent the corrosion of iron? A. Paint exposed iron parts with protective paint. B. Protect the iron from polluted air. C. Add carbon to the iron. D. Let the iron develop a natural coat of carbonate. 2. The source

    asked by StarBuddy on October 3, 2013
  58. Chemistry

    1. Which of the following will result in a chemical change? A. Melting ice to obtain water B. Evaporating alcohol into vapor C. Drying wood in a shed D. Burning coal in a furnace(My answer) 2. A salt is obtained as a reaction between A. a nonmetal and a

    asked by Anonymous on September 27, 2011
  59. chemistry

    what is the difference between ionic and molecular/covalent compounds? Which one uses prefixes? Which one has a charge, shares electrons, use Roman numerals, are between a metal and nonmetal, etc.? i'm really confused. please help! thank you!

    asked by Anonymous on June 6, 2012
  60. Chemistry

    What kind of metal is Bi? (metal, nonmetal, metalloid, transition metal, or lanthanide metal)

    asked by Sky on May 1, 2020
  61. Chemistry

    Which of the following must be the same before and after a chemical reaction? Answer: The sum of the masses of all substances involved and the number of atoms of each type involved. WHY?

    asked by Jessica on January 17, 2014
  62. Chemistry Plz hurrry

    What are charateristic of a ionic bond and a chemical bond? An ionic bond is a type of chemical bond that involves gain or loss of valence (outer shell) electrons in order to attain stability. That is not what I am looking for but thanks anyway An ionic

    asked by Smooches on November 30, 2006
  63. chemsitry

    What ions are very important for the proper fuctioning of biological systems such as nerves and cells? A)alkali earth metals B)hydrogen ions C)oxygen ions D)nitride ions E)alkali metal ions

    asked by ninjaturtle on April 21, 2007
  64. chem help ASAP!!!!

    What ions are very important for the proper fuctioning of biological systems such as nerves and cells? A)alkali earth metals B)hydrogen ions C)oxygen ions D)nitride ions E)alkali metal ions my choice is A or C can anyone help?

    asked by optifree on April 22, 2007
  65. Chemistry

    I am having a lot of trouble understanding acid-base reactions. I was able to struggle through most of the homework, but I'm not usre about these questions. 1) Can an acidic solution be made less acidic by adding an acidic solution? 2) Pennies manufactured

    asked by Mary on December 4, 2009
  66. Chemistry

    If you have to write the products of the chemical reaction Fe+O*2( asterisk means subscript),how would you know the charge of Fe in the compound FeO? If the charge is 2+, then the product would be FeO, but if the charge was 3+, then the product would be

    asked by Emily on April 17, 2010
  67. biology

    Which of the following is true about the relationship between energy and chemical reactions? Activation energy is required for a chemical reaction to occur. Activitation energy is not necessary in a chemical reaction which releases energy. Chemical bonds

    asked by ballamoney1 on April 15, 2010
  68. chem

    Please calculate the energy involved in the following chemical reaction, given the values below: 2Ag + H2S --> Ag2S + H2 -24 -33

    asked by lost girl on March 2, 2014
  69. chem

    Please calculate the energy involved in the following chemical reaction, given the values below: 2Ag + H2S --> Ag2S + H2 -24 -33

    asked by lost girl on March 2, 2014
  70. science

    1. Which is not a characteristic of the group 1 alkali metals? A. High densities B. Low melting points C. Found in batteries D. Silvery solid 2. which of the following is true of the group 2 alkali earth metals A. they are less dense that the group 1

    asked by Help me on February 24, 2017
  71. chemistry

    how do you know what/which roman numeral to place between the cation and the anion of metal-nonmetal substances?

    asked by mike on October 25, 2009
  72. chemistry

    how do you know which roman numeral to put between the cation and the anion of a metal-nonmetal substance?

    asked by mike on October 25, 2009
  73. chem

    how do you know which roman numeral to place between the cation and the anion of a metal-nonmetal substance?

    asked by mike on October 25, 2009
  74. Minoxidil

    So, I'm doing a research project for my chemistry class, and one of the parts that I have to answer is the chemical reaction of the substance that I'm researching. But there's a problem. I've searched every single website regarding minoxidil, but I cannot

    asked by Jude on May 28, 2012
  75. Chemistry

    Determine the type of chemical reaction, find the limiting reagent, determine the amount of product in grams, and the amount of grams of excess reagent. Chromium metal is heated with oxygen to give chromium (III) oxide. Start with 38.5 moles chromium metal

    asked by Anonymous on November 2, 2015
  76. Chemistry

    A half-cell that consists of a copper wire in 1.00 M CuNO3 solution is connected by a salt bridge to a half cell containing a 1.00 M X(II) acetate solution and an electrode of metal X. The voltage of the cell is 2.00 V, with metal X as the positive

    asked by JUNDY on April 12, 2015
  77. chemistry

    which alkali metal form superoxidess?(2)explain why rubidium has a short life?

    asked by sophie on March 7, 2013
  78. chemistry

    The following questions are about the reaction of sodium oxide with nitric acid. 1)What mass of sodium oxide would be needed to react with acid to form 0.5 mol salt? I said 1.5 2) How much sodium oxide would be required to neutralise 230cm3 of 1.0moldm-3?

    asked by 0ooooooooo0 on September 28, 2017
  79. physical science

    is this correct or incorrect nonmetal are elements that tend to gain electrons in chemical reactions.

    asked by liz on November 3, 2007
  80. Chemistry

    I did a back titration with an unknown carbonate and using the average % carbonate (by mass) which I found to be 27.40% and appropriate calculation decided where the unknown is an alkali metal carbonate or an alkaline earth metal carbonate. I have no idea

    asked by Laura on March 5, 2012
  81. chemistry

    Can someone help me with this homework problem? Which of the following is the best explanation as to why lithium is the strongest reducing agent in the alkali metals? A) relatively high charge density of Li B) lowest ionization energy of the metals C) most

    asked by ninjaturtle on April 21, 2007
  82. Chemistry - Naming Compounds

    Name the following compound. Ba3Pb2 I don't really understand since both the elements are metals and usually these bonds occur with a metal and nonmetal or two nonmetals.

    asked by k on January 30, 2012
  83. Chemistry

    40. An element has the configuration [He]2s^2. a. Which element is it?- Beryllium b. Is it metal or nonmetal?- metal c. How many valence (or outer shell) electrons does it have?- 2 valence electrons. Is this correct? Thanks -MC

    asked by mysterychicken on October 25, 2010
  84. Chemistry 151

    finding full formula of a compound knowing that it is a hydtrated sulfate salt of an alkali metal

    asked by Anonymous on October 13, 2011
  85. chemistry

    I did an experiment where i put iron nail with zinc metal wrapped around it in agar solution. the solution turned pink. I have to find the anode: anode reaction: cathode (remember, a metal can be an inactive electrode): cathode reaction (there aren’t any

    asked by Anonymous on March 10, 2009
  86. Physics

    An electroscope is a simple device consisting of a metal ball that is attached by a conductor to two thin leaves of metal foil protected from air disturbance in a jar. When the ball is touched by a charged body, the leaves that normally hang straight down,

    asked by Tiffany on February 7, 2013
  87. Chemistry

    i need to write to chemical formula for sulphur(II)iodide but both are non metals what do i do and i get confused sometimes cause i don't know when the metal/non metal gets a one charge (for the valences) ex. NiO =Ni1O2 =Ni2O =Nickel(I)Oxide ex. NiF2

    asked by Sam on February 16, 2014
  88. Chemistry

    Suppose that a stable element with atomic number 119, symbol Wr, has been discovered. (a) Write the ground-state electron configuration for Wr, showing only the valence-shell electrons. (b) Would Wr be a metal or a nonmetal? Explain in terms of electron

    asked by Lily on October 20, 2012
  89. AP Chemistry

    Q - Aluminum metal reacts with zinc(II) ion in an aqueous solution by the following half-cell reactions: Al(s) → Al3+(aq) + 3e− Zn2+(aq) + 2e− → Zn(s) Predict the potential of the cell under standard conditions. Predict whether the reaction will

    asked by Jessica AP Chemistry on July 6, 2016
  90. Chemistry

    An alkali is a soluble base. Is barium hydroxide an alkali?

    asked by janice on April 10, 2009
  91. Science

    What kind of substance does the following, reflects light, warms up in my hand, flattens out if hit with a hammer, conducts electricity? 1)nonmetal 2)metal 3)metalloid I think #3

    asked by Jamie on November 8, 2017
  92. science

    Just checking my answers.. 1. Which is not a characteristic of the Group 1 alkali metals? A. high densities B. low melting points*** C. found in batteries D. silvery solid 2. Which of the following is true of the Group 2 alkali earth metals? A. They are

    asked by Anon. on February 12, 2016
  93. Chemistry

    What type of chemical reaction is involved in the breakdown of large molecules, such as those found in food,into smaller molecules? i think it might be Catabolism, but im not sure

    asked by jess on October 2, 2011
  94. Science-Bohr Model 2

    For the metal elements, whats the connection between the ion charge and the # of electrons in the outershell? I wrote: The ion charge is positive for all metal elements and the electron # increases. please add any other info, thanks

    asked by Sara on April 13, 2010
  95. physical science

    When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction, and find the number of moles of oxygen that are needed to form 6 mol of Fe2O3. Show your work.

    asked by Megan on January 7, 2013
  96. Science

    What is true about the element francium (Fr, atomic number 87)? Choose all that apply. A) It has seven valence electrons. B) It is likely to form ionic bonds. C) It is in Period 7. D) It is nonmetal. E) It is a metal. I think it is B, C, and E?

    asked by Anonymous on February 28, 2014
  97. Science

    What is true about the element francium (Fr, atomic number 87)? Choose all that apply. A) It has seven valence electrons. B) It is likely to form ionic bonds. C) It is in Period 7. D) It is nonmetal. E) It is a metal. I think its B, C, E. Am I right?

    asked by Sebby-Chan on May 9, 2014
  98. Chemistry

    Many important metals occur as sulfide, arsenide, and antimonide minerals, especially in the Sudbury mineral complex. The first step in processing these ores involves “roasting” the ore in air to produce the metal or metal oxide, along with nonmetal

    asked by digpal rana on October 2, 2014
  99. Physics

    Neutral metal sphere A, of mass 0.10kg, hangs from an insulating wire 2.0m long. An identical metal sphere B, with charge -q is brought into contact with sphere A. Sphere A goes 12 degrees away from Sphere B and there is a 90 degree angle at Sphere B.

    asked by Alex on April 21, 2008
  100. chem

    the atom of element A has 2 electrons in its highest energy level N. a)what is the special name given to elements in the same gp as A? i answered as alkali earth metal because the valence electron is 2. am i right?

    asked by Yuni on September 27, 2011