Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neutral element possess?

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Chemisty

Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p3. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D. How many valence ...

Chemisrty

Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D. How many valence ...

Chem help

Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D. How many valence ...

Science ~CHECK MY WORK PLEASE~

A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is likely A. From Group 17 ********** B. From Group 1 C. From Group 15 D. A Noble Gas Which is most likely to...

science

I am a main group element. I have 3 p-orbital electrons in my valence shell. I have a lower first ionization energy than arsenic. I am not the largest atom in my group. What element am I?

chemistry

1.what is meant by atomic number of an element? 2.the mass number of an element is 18,it contains 7 electrons.what is the number of protons and neutrons in it?what is the atomic number of the element? 3.an element has an atomic number of 11 and its mass number is 23?what is ...

chemistry

elements below, indicate how each elements’ valence electrons act in a chemical reaction. Insert an L if an element loses electrons, a G if the element gains electrons, an E if the element can either lose or gain electrons, and a U if the element is generally unreactive. H K...

science

I know that every element has only a certain set of allowed energy states & that the exact energy of these states depends upon the number of electrons, but why is the colour of the light emitted by an element (in GASEOUS STATE) characteristic of the element? The color of light...

Science

Why certain elements bond well while others do not? Which of the three sub-atomic particles(electrons, protons, and neutrons) determines most of the properties of an element and why? How the atom of one element is different from the atom of another element?

Science

Which of the following statements is not true of using electron dot diagrams? A. The element's group number provides a clue about the number of valence electrons. B. An element with eight valence electrons is chemically unstable. C. Dots should be placed one at a time on each ...

Chemistry

The homework question said "which 2nd row element has 6 valence electrons and a valence of 2?" I don't really understand the question, because oxygen would be the element with the 6 valence electrons, but wouldn't that mean that it has a valence of 6? Does the "valence of 2" ...

chemistry

Which statement correctly describes an atom of the element helium? A. An atom of helium has its valence electrons in it's first energy level. B. An atom of helium most similarly behaves like an atom of hydrogen since it is in the same period. C. An atom of helium has a full ...

CHEM

Cl2 + SO2 + 2 H2O --> 2 Cl^1- + SO4^2- + 4 H^1+ 1) Which element is oxidized ? (simply write the element symbol; e.g. Fe, O) 2) How many electrons are lost by each atom ? (1, 2, 3) 3) Which element is reduced ? 4) How many electrons are gained by each atom ?

Science

1. Consider a neutral atom that has 17 electrons A.) how many protons does it have b.) what is it's atomic number c.)which element is it 2. List the following for an atom with 33 protons and 42 neutrons a.) the name of the element b.) the atomic number C.)the number of ...

Chemistry

ELement A has a valence electronic structure of ns2np1. Element B has the valence electronic structure of ns2np5. Write a formula for the compound that would be formed from elements A and B. Element A has three electrons to lose to make the last shell eight. Element B has 1 ...

CHEMISTRY

On the ionization energy vs. atomic number graph, the peaks, which are Noble Gases, gradually get smaller. Which statement below would best explain that pattern? A Each successive element on the peaks has fewer electrons and that would make ionization energy less. B Each ...

Science

Use your periodic table of elements. Take any element of your choosing (from period 4 or above) and answer the following questions: What is the element's name and symbol? Is it a metal, nonmetal, or metalloid? Which family does it belong to? How many protons, neutrons, and ...

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

Biology

These are true and false questions and I want to be sure of my answers. Please someone check. Thanks: The eight-element periodicity found in the Periodic Table is related to the number of electrons in the outermost energy level of the atoms that make up each element. True 2. ...

Biology

These are true and false questions and I want to be sure of my answers. Please someone check. Thanks: The eight-element periodicity found in the Periodic Table is related to the number of electrons in the outermost energy level of the atoms that make up each element. True 2. ...

Chemistry - check answers

1) Which element has the largest first ionization energy? A) Rb, B) Fr, C) K, D) Na, E) Mg Answer: E 2) Which has the highest electronegativity? A) Na, B) Cs, C) Si, D) Te, E) Cl Answer: E 3) In which of the following are the bonds arranged in order of increasing polarity? A) ...

chemistry final-urgent

Choose the element with the highest ionization energy element: Na, Mg, Al, P, S In my book: ionization energy increase from left to right and bottom to top. Na<Mg<Al<P<S S is highest ionization energy? my instructor review this problem and his answer is P is a ...

Science!

Which is most likely to be part of an ionic bond? A. An atom with no valence electrons B. An atom with one valence electron C. An atom with two valence electrons D. An atom with three valence electrons Is the answer B?

Science

Which is most likely to be part of an ionic bond? A. An atom with no valence electrons B. An atom with one valence electron C. An atom with two valence electrons D. An atom with three valence electrons I think it is B.

CHEM

Consider the following balanced oxidation-reduction reaction: Cl2 + SO2 + 2 H2O --> 2 Cl^1- + SO4^2- + 4 H^1+ Based on the above reaction: 1) Which element is oxidized ? 2) How many electrons are lost by each atom ? 3) Which element is reduced ? 4) How many electrons are ...

Science

When determining the formula for a compound, it is important to know the valence numbers of each element. Suppose that "element A" has a valence number of 3 and "element B" has a valence of 2. If the two elements combine, then when writing the formula for the resulting ...

Chemistry

Element X has the highest first electron affinity in its period; the ground state electron configuration of it's most common ion is [Kr] 5s^2 4d^10 5p^6 a Element Y is the second largest element in it's period; it's valence electrons are in orbital(s) that have n=6 what is the...

chemistry

I need help on a few of these. A. How many protons are in one atom of fluorine - 19? B. How many neutrons are in one atom of potassium - 39? C. How many electrons are in one neutral atom of V - 51? D. What is the symbol for the element that has 78 protons? E. What is the ...

Science-Periodic Table

describe how to verify the # of electrons in the ion of an element. Can you please correct some of my wordings in here. I don't really get how to explain it. You look at the atomic number which is the same number of protons as electrons; but if there is a positive ion charge, ...

Chemistry

When determining the formula for aacompound, it is important to know valence numbers of each element. Suppose that element A has a valence number of 3 and element B has a valence number 2. If the two elements combine, then when writing the formula for the resulting compound ...

Chemistry

why does inoinzation energy tend to decrease from top to bottom within a group? i'm not sure, but i think it has something to do with the size of the element The electrons involved in ionization, that is, the outermost electrons, are farther away from the nucleus, and are held...

Chemistry-atoms

A. How many protons are in one atom of fluorine - 19? B. How many neutrons are in one atom of potassium - 39? C. How many electrons are in one neutral atom of V - 51? D. What is the symbol for the element that has 78 protons? E. What is the symbol for the neutral atom that has...

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?

Chemistry

i don't understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...

Chemistry

I don't understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy must be supplied to ...

General Chemistry

lectron configuration of a neutral atom is 1s22s22p63s23p2.      a) Draw the orbital diagram.      b) Write a complete set of quantum numbers for each of the electrons.      c) Name the element.

chemistry

Which of these elements has the electonic configuration of The energy absorbed or released when an electron is added to a gaseous atom is known as Which of these elements behave partly as an alkaline metal as well as a halogen element? Hydrogen can be obtained economically as ...

chemistry:energy level of element

each element has a different has a different set of energy level use this fact to explain why colour of light emited by an element in gaseous state is the characteristics of the element The light emitted is characteristic of a specific set of allowed quantum levels, each ...

Chem

From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 X lo7) times greater than the wavelength corresponding to the energy difference between a particular excited state of the ...

Science

Which electrons in an atom take the most energy, and what are they called? What Kind of diagram is used to show how many of these electrons an atom has? What name is given to the elements with eight outer electrons? Which element belongs to this group, although it has only two...

Chemistry

ELement A has a valence electronic structure of ns2np1. Element B has the valence electronic structure of ns2np5. If the value of n for element A is 3, what is the set of 4 quantum numbers that would describe the energy of the electron represented by np1? I don't want to do ...

Chemistry - College

The ionization energy of a certain element is 472 kJ/mol. However, when the atoms of this element are in the first excited state, the ionization energy is only 166 kJ/mol. Based on this information, calculate the wavelength of light emitted in a transition from the first ...

chemistry

The following describes the process of an atom emitting light. Place the steps in order: (I already know the first two steps are: 1. Energy is absorbed by electrons and excitation occurs and 2. Electrons move from the ground state to the excited state.) Electrons are unstable ...

chm

If a neutral element has 8 neutrons and 7 electrons, which expression correctly identifies the element?

Physical Science

Based on a data table of their preliminary observations, which is shown below, complete the final column entitled: “Number of Valence Electrons” and then answer the questions that follow. Element Name Symbol Group Number Alkalininium A 1 Earthium E 2 Redonkulinium R 3 ...

Chemistry

A neutral atom of an element has 2 electrons with n=1, 8 electrons with n=2, and 5 electrons with n=3. Write its electron configuration and find: A) atomic number B) total number of s electrons C) total number p electrons D) total number of protons E)Paired electrons F)...

chemistry

Examine the scenario. A magnesium (Mg) atom gives one electron to two atoms of another element, and takes on a 2+ charge. The two atoms of the other element each form a 1− charge. As a result, the magnesium ion and the two ions of the other element attract and form an ionic ...

Chemistry

7. Which of the following is true? A. Cesium is the most active group 1 metal, because its valence electron is held more tightly than the others in the same group. B. Group 1 elements are more reactive than the group 2 elements because they have more valence electrons to lose...

Science

Consider a neutral atom that has 17 electrons A.) how many protons does it have? B.) what is it's atomic number? C.) which element is it?

chemistery

suppose that "element a" has a valence number of 3 and "element b" has a valence number of 2. if the two elements combine, then when writing the formula for the resulting compound what subscript number will be given to "element b"?

Chemistry

1) How does the atomic radius change from left to right across a period in the periodic table? A) It tends to decrease*** B)It tends to increase C) It first increases, then decreases D) It first decreases, then increases 2) What is the charge of a cation? A) A positive charge...

Chemistry

1) How does the atomic radius change from left to right across a period in the periodic table? A) It tends to decrease*** B)It tends to increase C) It first increases, then decreases D) It first decreases, then increases 2) What is the charge of a cation? A) A positive charge...

Chemistry

Which atom has the smallest valence p atomic orbital? -Carbon -Nitrogen -Sulfur Why? A. That atom has the highest electronegativity. B. That atom has the fewest number of electrons. C. That atom does not have electrons in p orbitals. D. The valence electrons for that atom have...

Periodic Table

1. The atomic mass of an element is A. the sum of the protons and neutrons in one atom of the element.** B. twice the number of protons in one atom of the element. C. a ration based on the mass of a carbon-12 atom D. a weighted average of the masses of an element's isotopes

Chemistry (Follow up post - Dr.BOB22)

Ionization is when an electron is removed from an atom and ionization energy is the energy required to do this. "Electrons stream from the negative electrode to the positive electrode. In the process of moving from one electrode to the other they knock electrons in the ...

Kelsie

name the element wsith the atomic number z= 15 and the atomic mass number 31. How many electrons does the neutral of this lement have? How many neutrons does the neutral atoms of this element have? I know the element with the atomic number of 15 and atomic mass of 31 is ...

Science

Unit 3 Test Multiple Choice Please select the correct response for the following questions. 1. What is the smallest part of all matter called? (1 point) * a. Element b. Atom c. Molecule d. Compound 2. Which of the subatomic particles is negative? (1 point) a. Nucleus b. ...

chemistry

A certain element forms an ion with 54 electrons and a charge of +2. Identify the element.

chemistry

What is the difference between the ionization energy of inner-shell electrons and the ionization energy of outer-shell electrons? A. The ionization energy of inner-shell electrons is less than the ionization energy of outer-shell electrons. B. They are equal to each other. C. ...

Science

Each element has a different set of energy levels. Use this fact to explain why the colour of the light emitted by an element in the gaseous state is characteristic of the element? I will be happy to critique your thinking on this.

Science

1. groups/ family of elements are ones which: A. Have the same number of electrons in the valence/ outer engery level B. Have exactly 8 electrons in the valence shell outer energy level C. Have the same number of protons in the nucleus 2. A period represents elements which? A...

Quantum Physics

Each element has a different set of energy levels. Use this fact to "explain" whay the colour of the light emitted by an element in the gaseous state is characteristic of the element. When an electron falls from one of the higher energy levels to a lower energy level, light is...

Chemistry

In our text book, the formula for finding the formal charge of an element in a compound is c(sub f) = X - (Y + Z/2) where x = the number of valence electrons y= the number of unshared electrons owned by the atom z= the number of bonding electrons shared by the atom. would this...

Science

Mrs. Sue please help! 1. Which is most likely to be part of an ionic bond? (1 point) an atom with no valence electrons an atom with one valence electron an atom with two valence electrons an atom with three valence electrons 2. To form an oxygen molecule (O2), two oxygen atoms...

Chemistry - Periodic Table+IE(check+help)

The following data lists the ionization energies for a given atom: IE1 = 738Kj/mol; IE2 = 1451Kj/mol; IE3 = 7733Kj/mol. Predict the valence electron configuration for this atom, and explain your reasoning. i do not understand this question but i will give it a try, please ...

Chemistry - Periodic Table+IE(check+help)

The following data lists the ionization energies for a given atom: IE1 = 738Kj/mol; IE2 = 1451Kj/mol; IE3 = 7733Kj/mol. Predict the valence electron configuration for this atom, and explain your reasoning. i do not understand this question but i will give it a try, please ...

chemistry

Which of the following is true? A. Group 1 elements are more reactive than the group 2 elements because they have more valence to lose. B.Lithium is the least reactive element in group, because its valence electron is held more tightly than the others in the same group. C. ...

Chemistry

Check? Answers On bottom. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond When an atom gains or loses valence electrons and becomes charged, it is known as a(n) _____. A. ...

chemistry

Check? Answers On bottom. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond When an atom gains or loses valence electrons and becomes charged, it is known as a(n) _____. A. ...

chemistry

Check? Answers On bottom. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond When an atom gains or loses valence electrons and becomes charged, it is known as a(n) _____. A. ...

science

How do I use the fact that each element has a different set of energy levels to explain why the colour of the light emitted by an element in the gaseous state is characteristic of the element? Energy affects frequency and frequency determines wavelenght. The color of an ...

Physics

Lithium is the atom which has three protons in its nucleus and three electrons circling the nucleus.(it usuallly has 3 nuetrons as well,but they r not important in this problem.)Two of the electrons circle the nucleus at a distance 1.8* 10^-11 m (app.)The third electron is ...

science(check my answers)

1. Which of most likely to be a part of an ionic bond? A.an atom with no valence electrons b.an atom with one valence electrons** c.an atom with two valence electrons d.an atom with three valence electrons 2.to form oxygen molecule(02), two oxygen a share two pairs of ...

Geometry

If 3 us an element of A and 3 is not an element of B, then which of the following is NOT true 3 is an element of B complement 3 is an element of A union B 3 is an element of A intersect B

discrete math

Fill in the blanks: For all sets A and B, if A is in the set of B, then A union B in in the set of B. Proof: Suppose A and B are any sets and A in in the set of B. [we must show that __________] Let x be and element of _______. [we must show that __________] by definition of ...

Chemistry

Name an element that has 5 electrons in the third energy level. How do i determine the third energy level Row three on the periodic table is third energy level If memory serves me will, it begins with sodium. Ok. iS Krypton the electron configuration that ends in 4s2, 4p5 I ...

chemistry

Suppose that "element A" has a valence number of 3 and"element B has a valencenumber of 2. If the two numbers combine,then when writing the formula for resulting in the compound what subscript number will be given to element "B

math

suppose a data set has n elements with n greater than or equal to 6. as you know, if n is even, then the median of the set does not have to be an element of the set. for what values of n does the first quartile not have to be an element of the set?

computer science

Write a method printBackwards that prints an array of integers in reverse order, in the following format. For the array {1, -3, 4, 7, 2}: element [4] is 2 element [3] is 7 element [2] is 4 element [1] is -3 element [0] is 1

math

an element has a BCC structure with cell edge of 288pm. the density of the element is 7.2g/cm3. how many atom are present in 208g of the element?

Physical science CHECK my answers

1. What is the smallest part of all matter called? (1 point) * a. Element b. Atom*** c. Molecule d. Compound 2. Which of the subatomic particles is negative? (1 point) a. Nucleus b. Neutron c. Proton d. Electron***** 3. Who provided the first evidence that atoms contain ...

Chem

Which group shows the correct order of first ionization energy? Ca > Na > K Al > Si > P K > Ca > Ge Na > P > Cl Cs < Rb < Na I know the closer the element is to the right side of the table, group 8, the higher the ionization level, and the lower ...

chemistry

wen determining the formula for a compound its important to no the valance no of each element suppose element a has a valance no of 3 an element b has a valence no of 2 if the two elements combine then wen writing the formula for the resulting compound wat subscript no will be...

Chemistry

ONe day, you were walking along the road with your friend and saw a piece of solid that you've never seen before. You were curious about the identity of the substance so you tried to give it to the Department of Science. You found out from them that it is a new found element ...

CHECK answers science

my answer has the **** 1. What is the smallest part of all matter called? (1 point) * a. Element b. Atom***** c. Molecule d. Compound 2. Which of the subatomic particles is negative? (1 point) a. Nucleus b. Neutron c. Proton d. Electron*** 3. Who provided the first evidence ...

Science

Which statements show how a chemical bond is formed? (Select all that apply.) a. The valance electrons of an atom are emitted from an atom’s orbital. b. The valence electrons of a metal transfer to the valence shell of a nonmetal to stabilize both atoms. c. The valence ...

Check my answers, Physical science

my answer has the **** 1. What is the smallest part of all matter called? (1 point) * a. Element b. Atom***** c. Molecule d. Compound 2. Which of the subatomic particles is negative? (1 point) a. Nucleus b. Neutron c. Proton d. Electron*** 3. Who provided the first evidence ...

chemistry

For the elements in row 2 of the PT discover the relationship between ionization and the family number of the element Element. Family. Ionization Ener Lithium. 1 13.6 beryllium. 2. 9.3 boron. 13. 8.3 carbon. 1 4. 11.27 nitrogen. 15 14.53 oxygen. 16. 13.62 fluorine. 17. 17.42 ...

Chemistry

Atom A- 6 protons, 6 electrons, 7 neutrons Atom D- 6 protons, 6 electrons, 8 neutrons Atom X- 7 protons, 7 electrons, 8 neutrons Atom Z- 8 protons, 8 electrons, 9 neutrons Which two atoms are isotopes of the same element? a. A and D b. A and Z c. X and D d. X and Z How am I ...

chemistry help!!

For each of the following pairs, indicate which element has the larger first ionization energy Mg or Al. i put Mg. Repulsion of paired electrons in Mg is more significant than Al's higher effective nuclear charge. but got it wrong. Al. Repulsion of paired electrons in Al is ...

Chemistry

From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 e7) times greater than the wavelength corresponding to the energy difference between a particular excited state of the ...

chemistry

A sodium atom when excited gives off two very specific wavelengths of visible light. What does this tell us about sodium? A. There are two principal electron transitions in sodium. B. There are two electrons in a sodium atom. C. A sodium atom has its electrons in two energy ...

Chemistry

Among the following, which element has the lowest ionization energy? A. Na B. Cl C. Cs D. I

Science

I am a non-metal. I belong to the Halogen family. I am not the largest or smallest atom in my group. My first ionization energy is greater than that of iodine. I am not a gas at room temperature. What element am I?

Elements

how can someone find out which element is a more chemically active nonmetal from looking at the Periodic Table? What element is a black crystal that hs 4 electrons in its outermost energy level?

Science

Why is the colour of the light emitted by an element in its gaseous state characteristic of the element? And why does hydrogen with only one electron have so many spectral lines? I have some idea but I need to clarify my understanding against someone else's view. I would be ...

Science

What is the number of valence electrons for the element beryllium? Please help.

Physical Science

10. The more compact a metal is, the less brittle it becomes. -True? I'm confused about this one because of what the textbook says: "the more compact the atoms become, the harder the metal becomes. While the compactness makes the metal hard, a fracture on any boundary causes ...

Physical Science

10. The more compact a metal is, the less brittle it becomes. -True? I'm confused about this one because of what the textbook says: "the more compact the atoms become, the harder the metal becomes. While the compactness makes the metal hard, a fracture on any boundary causes ...

chemistry

i have no idea how ionization works, yet i have to do a worksheet on it! help! how does ionization, and how do you tell which element has a higher ionization energy in relation to another? PLZ ANSWER SOON! I NEED HELP!

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