1. CHEM

    Consider the following neutral electron configurations in which 'n' has a constant value. Which configuration would belong to the element with the most negative electron affinity, E-ea? a) ns^2 b) ns^2 np^2 c) ns^2 np^5 d) ns^2 np^6 would the answer be "d"??? (as in, it would ...
  2. Chemistry

    Element x has the highest first electron affinity in its period, the ground state electron configuration of its common is: [Kr] 5s2 4d10 5p6 Element Y is the second largest element in its period; its valence electron are in orbital(s) that have n= 6. What is the most stable ...
  3. AP Chemistry

    Which of the following electron configurations correspond to an excited state? Identify the atoms and write the ground-state electron configuration where appropriate. If the configuration is a noble gas, enter the noble gas in brackets, for example [Ne] for F -. If the ...
  4. 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...
  5. chemistry

    Identify the neutral element represented by this excited-state electron configuration, then write the ground-state electron configuration for that element. Excited State: 1s2 2s2 2p2 3s1 Element Symbol: ? Ground State: ?
  6. Chemistry

    Which of the following electron configurations of neutral atoms represent excited states? [Xe]6s^2 4f^1 [Ar]4s^2 3d^3 1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 [Kr]5s^1 4d^5 2s^2 Which neutral atoms have the following electron configurations? Enter the name or symbol. [Ar]4s^2 3d^3 [Kr]5s...
  7. chemistry electron config

    I need to know the predicted and actual electron configuration for Lanthanum I know for lets say Cr the predicted config is [Ar] 3d44s2 and the actual is [Ar]3d54s1 but lanthanum is different and i don't know how to do it. Any help? You can find the actual electron ...
  8. Chemistry-electron configuration CONFUSED!!

    I need help with electron configuration. I do not understand any of it!! I bombed a test ad have a chance to retake it. Any info on electron configuration is great! It is really hard to help you if we don't know what is wrong. Here is a site that may help. http://en.wikipedia....
  9. Chemistry

    Use these answers for questions 4 - 7. (A) 1s2 2s22p5 3s23p5 (B) 1s2 2s22p6 3s23p6 (C) 1s2 2s22p62d10 3s23p6 (D) 1s2 2s22p6 3s23p63d5 (E) 1s2 2s22p6 3s23p63d3 4s2 4. An impossible electronic configuration 5. The ground-state configuration for the atoms of a transition element ...
  10. Chemistry

    What would be concept in which you would have to use electron configurations in order to solve? and how would you determine the answer? One uses the electron configuration to solve the bonding preferences and energies.
  11. Chemistry Periodic Trends

    The electron affinities of the elements from aluminum to chlorine are -44, -120, -74, -200.4, and -384.7 kJ/mol respectively. Rationalize the trend in these values. Electron affinity is the energy absorbed (endothermic) or emitted (exothermic) by the addition of one electron ...
  12. Chem Please Help

    I know how to write elctron configurations but I am having problems with electron config. of main group ions. Problem: Using condensed electron configurations, write reactions for the formation of the common ions of the following element: Iodine (Z=53) Solution: I ([Kr] ...
  13. Science

    Batteries are made of two metals with different electron affinities. What does the phrase “electron affinity” mean and how does this affinity affect the voltage of the battery
  14. chemistry

    How can I determine which elements have higher first and second ionization energies than other elements? Also, how can I find the number of valence electrons from the electron configuration? Also, how can I use the electron configuration to find out what element it is talking ...
  15. Chemistry Electron Configuration Questions

    I do not understand anything about electron configuration. How do you figure out if the element is in P,D,S,orF? What do the subscripts represent? What is a subshell? I am so confused!! You figure it out by using the Aufgau principle, placing electrons in the proper order in ...
  16. Science

    A chemical element with the symbol X has the electron arrangement 2,8,6 (electron configuration 1s2 2s2 2p6 3s2 3p4). Which chemical species is this chemical element most likely to form?
  17. Chemistry

    An element with the symbol Z has the electron configuration 2.8.6. Which species is this elrment most likely to form? A. The ion Z 2+ B. The ion Z 6+ C. The compound H subscript 2 Z D. The compound Z subscript 6 F Which ionization requires the most energy? A. Na--> Na ...
  18. 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 ...
  19. Chemistry

    Where Can i find drawing of the electron dot structure of the following atoms. Argon,Calcium,Iodine www.webelements.com will give you the electron configuration. Scroll down the menu on the left side. The electron dot structure is done this way: Write the symbol for the ...
  20. Chemistry

    You write the electron structure like this. 1s2 2s2 2p6 3s2 3p6 3d10 4s1 is the neutral Cu atom. Remove the two outside electrons to make the Cu^+2 ion. That leaves us with 3d9 as the outside and since that is an odd number, one electron must be unpaired. And you will note ...
  21. Chemistry

    Metals lose electrons under certain conditions to attain a noble-gas electron configuration. How many electrons must be lost by the element Ca? Is it 2 e^-? Which noble-gas electron configuration is attained in this process? argon radon krypton xenon helium neon
  22. Chemistry: Electron Configurations

    Write the electron configuration for the following ion. V3+ I got 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2. In simplified form, I got [Ar]4s^2. I checked my answer against the answer given in the back of my chemistry textbook, and the two didn't correspond. The answer my book gives is [...
  23. chemistry

    what is the complete electron configuration and the abbreviated electron configuration of copper (II) ion? what is the complete electron configuration and the abbreviated electron configuration of bromide ion?
  24. Chemistry

    Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a 3d electron in a copper atom, Cu. Like for the...
  25. Chem

    Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a 3d electron in a copper atom, Cu. Like for the...
  26. Chemistry

    Two electron configuration: Mg(Ne)3s^2 Zn(Ar)4s^2 3d^10 Using the configurations, explain the difference in relative reactivity of the 2 metals ( which are Mg and Zn)
  27. Chemistry

    Two electron configuration: Mg(Ne)3s^2 Zn(Ar)4s^2 3d^10 Using the configurations, explain the difference in relative reactivity of the 2 metals ( which are Mg and Zn)
  28. Chemistry

    Two electron configuration: Mg(Ne)3s^2 Zn(Ar)4s^2 3d^10 Using the configurations, explain the difference in relative reactivity of the 2 metals ( which are Mg and Zn)
  29. Chemistry

    How do you write the electron configuration of Curium (Cm) and copper (Cu)? I'm confused of writing electron configuration with d and f orbitals. Please help. Thanks.
  30. 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 ...
  31. electron configuration

    What is the electron configuration for As. [Ar] When I looked on the periodic table, it didn't make sense because [Ar] comes before As.
  32. Chem

    What is the relationship between the ionization energy of the monoanion such as CL- and the electron affinity of the neutral atom?
  33. chem

    If you maximize the unshared electrons in the boron atom, the electron configuration is? i know the electron configuration at ground state is 1S2 2S2 2P1 but when it maximizes unshared electrons i don't understand how it affects the configuration
  34. Chemistry

    What is the electron configuration of the complex: Fe(C2O4)3 3- I am not really quite sure how to go about doing this and whether the electron configuration are supposed to be for each atom.
  35. Lauren

    Write the electron configuration of Sn and Sn2+ Give the electron configuration of Cu+ and Cu2+
  36. chem

    which element has a more favorable (exothermic) electron affinity? K Mg how do i determine this?
  37. Intro Chemistry

    I am reviewing my test and I having trouble figuring out the answer to the following question: List the following element symbols in order of decreasing exothermic electron affinity: Al, Ca, As _______>________>________ I wrote: Al>As>Ca (I got it wrong) I know ...
  38. Chemistry

    6p2 is the last one of the electron configuration. I think the element is Pb. How do I know the charge of the element?
  39. chemistry

    Why is there a decrease in electron affinity going from lithium to sodium? A. There is a stronger nuclear charge, with no additional shielding electrons or number of shells. B. There are fewer spaces in the valence shell in which to place the added electron. C. The nucleus has...
  40. Chem

    How do you figure out the Noble Gas Configuration? Also, why do you not put in the "p" level and when do you( if you even do) put it in? You need to be more specific about your question. Elements that lose electrons (Na, Ca, Al, etc) gain the noble gas structure of the noble ...
  41. physics

    An electron is accelerated from rest through a potential difference that has a magnitude of 2.90 × 107 V. The mass of the electron is 9.11 × 10-31 kg, and the negative charge of the electron has a magnitude of 1.60 × 10-19 C. (a) What is the relativistic kinetic energy (in ...
  42. chemistry

    1. Write the electron configuration for each atom or ion. Then explain the distribution of electrons among energy levels. Ca, Be2+, and Br- I already found the electron configurations but I don't understand the second part of the question.(Then explain the distribution of ...
  43. Chemistry

    The following electron configurations correspond to the ground states of certain elements. Name each element. a) [Ar]3d^10 4s^2 4p^4 b) [Ne]3s^2 3p^3 c) [Ar]3d^2 4s^2 d) [Kr]4d^1 5s^2 e) [Xe]4f^13 6s^2
  44. College Chemistry

    Write a complete set of quantum numbers for the 5th electron added to H ion..(5th electron in any electron configuration). n= l= m(l)= m(s)=
  45. Chemistry

    Electron configuration for phosphorus is 1s2 2s2 2p6 3s2 3p3. So the number of electron must be 15 , right ? But , what if m = 1 ? Does it effect the number of electron ?
  46. General Chemistry

    The four quantum numbers for the last electron placed in the orbitals of a certain element are: n=3 l=2 m of l=0 and m of s=-1/2. What is the element? I need help with this part of chemistry I have NEVER understood this ever. I know how to do the configurations but not this. I...
  47. Chemistry

    Which of the following electron configurations of neutral atoms represent excited states? ( ) [Xe]6s24f1 ( ) 2s2 ( ) 1s22s22p63s23p63d2 ( ) [Ar]4s23d3 ( ) [Kr]5s14d5
  48. Chemistry

    Given the following three electron configurations: 1s2 2s2 2p5 How many core electrons does this element have? A. 4 B. 5 C. 9 D. 2
  49. Chemistry

    Which element has the following electron configuration: [Xe] 6s^(2) 5d^(1) 4f^(1)
  50. Chemistry (electron config)

    Write electron configurations for the following ions. Tl^+ [Xe]4f^145d^8 is that correct?
  51. chemistry

    1.) Which element has one of the highest electronegativities on the periodic table? 2.) Which element has one electron in a 3p orbital? 3.) Which element tends to gain one electron?
  52. Chemistry (Check)

    Q: Name the group that has a general electron configuration of ns^2 and provide an example of an atom with this general configuration. A: Alkaline Earth Metals and Beryllium [He] 2s^2 Q: Name the group that has a general electron configuration of ns^2np^6 and provide an ...
  53. Chemistry

    What is the electron configuration of the element with 27 protons?
  54. Chemistry

    Which element's 4+ ion would have the following electron configuration? [Kr]4d^10
  55. Physical Science

    Which one is incorrect? a) Carbon is 1s^2 2s^2 3s^2 b) Sodium 1s^2 2s^2 2p^6 3s^1 c) Neon 1s^2 2s^2 2p^6 d) all are correct I suggest you review this web page http://www.webelements.com/webelements/elements/text/periodic-table/econ.html and then develop a better understanding ...
  56. chemistry

    using only the periodic table, write the expected ground-state electron configurations for: a. element number 116 b. an element with three unpaired 5d electrons c. the halogen with electrons in the 6p atomic orbitals
  57. chemistry

    Rank these elements according to electron affinity. Br, S, Ne most energy released by gaining an electron: most energy absorbed by gaining an electron:
  58. chemistry

    which element has the ground-state electron configuration [Kr]5s^2 4d^10 5p^4
  59. chemistry

    which element has the ground-stat electron configuration [Ar]4s^2 3d^10?
  60. Chemistry

    What is the symbol for the element whose electron configuration ends with 4p6?
  61. Chemistry

    What element has the final electron configuration as 3s2 3p4?
  62. Chemistry

    What's the relationship between ionization energy and electron affinity? I ionization eneergy deals with losing electrons and electron affinity deals with gaining electrons, but I don't know how to explain the relationship.
  63. chemistry

    Ca + Br2 --> CaBr2 its synthesis and the reason the reaction happens is stable electron configuration but i don't understand why. Responses chemistry - DrBob222, Wednesday, January 21, 2009 at 10:06pm Synthesis because it's two elements combining to form a single product. ...
  64. Chemistry

    How can you find out how many unpaired electrons are present in gaseous Co3+ ion in its ground state? According to the NBS Circular 467 "Atomic Energy Leves", Co(3+) has 24 electrons with structure 1s(2), 2s(2), 2p(6),3s(2), 3p(6), 3d(6), and spectroscopic designation 5D4. (...
  65. Chemistry - electron configuration

    Hello Dr.Bob. Could you please take a look at the following question? I know the correct answer for it, but I'm not sure how to go about solving it. Which ground state electronic configuration will most readily ionize to a 2 + cation? A) 1s22s22p63s23p64s23d10 B) ...
  66. 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 ...
  67. 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 ...
  68. Chemistry

    What element is represented by this electron ground state configuration 4d^10 4f^14 5s^2 5p^6 5d^10 5f^14 6s^2 6p6 6d^2 7s^2 How do I figure this out
  69. Chemistry

    what are the electron configurations for bromine, iodine, and chlorine? and what are the similarities for the configurations?
  70. Chemistry

    What is the l quantum number for the last electron added in the Aufbau procedure for forming the electron configuration of barium?
  71. Chemistry

    What is the n quantum number for the last electron added in the Aufbau procedure for forming the electron configuration of uranium?
  72. CHEMISTRY

    1. For the ion Fe3+ what is the electron configuration and electron atrangement? please explain... i do not understand... 2. F- +. Br2----> Br- + Cl2----->
  73. chem

    Write electron configurations for the following ions, and determine which have noble-gas configurations Tl+ As3- I -
  74. 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 ...
  75. Chemistry

    Sort the following elements by electron affinity, from most positive to most negative EA value: bismuth, chlorine, helium, cesium, and tellurium.
  76. Chemistry: Electron Configuration

    The following questions relate to the bonding in the OH-1 ion. (16 points) Write the electron configuration for H. (1 point) Write the electron configuration for O. (1 point) Draw the molecular orbital diagram for OH-1. (5 points) Draw the Lewis Structure for OH-1. (3 points) ...
  77. Chemistry

    Large jumps in ionization energy tend to occur whenever the removal of that electron disrupts an electron configuration ending in: a. ns^2 b. ns^1 c. np^6 d. np^4
  78. General Chemistry

    The electron configuration of a neutral atom is 1s22s22p63s2. Write a complete set of quantum numbers for each of the electrons. Please explain with answers.
  79. chem please explain to me!

    can someone please elpain to me the formation of binary ionic compounds from its constituent element. cuz I don't understand! thanks I really thank you guys alot! What grade are you in? Do you know about s and p orbitals? um.. why does it matter??? and I don't get the whole ...
  80. chemistry

    Rank the following elements by electron affinity, from most positive to most negative EA value: tellurium, bismuth, neon, sodium, iodine i tried Te, Bi, Na, I, Ne and it was incorrect.
  81. Physics

    An electron is accelerated from rest through a potential difference that has a magnitude of 2.70 × 107 V. The mass of the electron is 9.11 × 10-31 kg, and the negative charge of the electron has a magnitude of 1.60 × 10-19 C. (a) What is the relativistic kinetic energy (in ...
  82. chemistry

    Which neutral atoms have the following electron configurations in either a ground state or excited state? Enter the name or symbol. [Ar]4s23d3 - I know that this is Vanadium [Xe]6s24f1 - I thought that this was Lu but it counts it wrong each time! Help please!
  83. Chemistry

    what is the electron arrangement and electron configuration of Fe3+? it loses 3 electrons so is it vanadium.... please explain.. by the way is this a transition metal? if so are there any rules?...... i don't understand!!!
  84. Chemestry 095

    Write the electron configuration for the following ground state atoms and ions. strontium+2 ion; iron element; selenium -2 ion; gallium +3 ion; and tin element.
  85. Chemistry

    The energies, E, for the first few states of an unknown element are shown here in arbitrary units: n= 1, E=-21 n=2, E=-9 n=3, E=-4 n=4, E=-3 ...,... infinity, 0 A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each ...
  86. Chemistry

    Write the shorthand version of the electron configuration of an element that has eight electrons. I came up with the configuration as 1s^2-2s^2-2p^4, but how do I write the shorthand version of an element that has not been specified?
  87. Chemistry HELP ASAP

    A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance. If the sample is paramagnetic, the mass reading of the balance will increase when the field is switched on. Based on ...
  88. science(chemistry)

    Using condensed electron configurations and Lewis electron-dot symbols to depict the monatomic ions formed from each of the following reactants, predict the formula of the compound the ions produce. 1) K and P
  89. science

    i cant unscramble this 1.when element bond to form ( scunpoodm) both their ( troppsiree ) and their (loorc). 2. All stable electton configurations are the same as the ( steaner ) noble gases. 3. Only (route ) electron are invole in bonding
  90. Chemistry (please Help!!)

    determine which experiences a lower effective nuclear charge. using words and/ or drawings explain why. A) an electron in a 2s or an electron in a 2p B) a valence electron on sulfure or a vance electron on silicon C) a valence electron on chlorine or a valence electron on ...
  91. Chemistry

    Large jumps in ionization energy tend to occur whenever the removal of that electron disrupts an electron configuration ending in: a. ns2 b. ns1 c. np6 d. np4
  92. Chem Electron Config

    S2- Cu+ Sn2+ O2- A 1s22s22p63s23p63d10 B. 2s2 C. 1s22s22p63s23p4 D. 1s22s22p63s23p63d104s1 E. 1s2 F. 1s22s22p63s23p64s23d104p65s24d10 G. 1s22s22p63s23p64s23d104p64d105s25p2 H. 1s22s22p4 I. 1s22s22p6 J. none of the above Choose from the list the correct electron configurations ...
  93. Chemistry

    What is the electron configuration of the element with 27 protons? Is it 1s2 2s2 2p6 3s2 3p6 3d7 4s2 or is that wrong?
  94. chemistry

    Write electron configurations for the following ions, and determine which have noble-gas configurations. (Type your answer using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2.) Ru2+ thanks
  95. 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 ...
  96. Chemistry

    Explain how a non metal atom becomes negative. Lose an electron, become negative. Bob Pursley isn't at his computer right now but I don't think he would mind if I explained that ADDING an electron to a non-metal makes it become negatively charged. I agree with Dr Bob; Losing ...
  97. Physics

    A uniform electric field of magnitude 395 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.40 cm. What is the work done by the field on the electron? What is the change in potential energy associated with the ...
  98. Plz Help Physics

    We know that the negative charge on the electron and the positive charge on the proton are equal. Suppose, however, that these magnitudes differ from each other by 0.00011%. With what force would two copper pennies, placed 1.4 m apart, repel each other? Assume that each coin ...
  99. physics

    An electron ( mass = 9.11×10−31 kg) leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, which is 1.85 cm away. It reaches the grid with a speed of 2.95×10^6 m/s . (You can ignore the gravitational force ...
  100. chemistry- GK

    how is the periodic law demonstrated within the groups of the periodic table? also I need help writing the noble gas notation for the electron configuration of each of the following elements and indicate the period in which they belong a Li- b O- c Cu- d Br - e Sn-
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