Post a New Question

Chemistry - electron configuration

posted by .

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) 1s22s22p63s23p64s23d104p4
C) 1s22s22p63s23p64s1
D) 1s22s22p63s23p64s23d104p2
E) 1s22s22p63s23p2

The correct answer for this question is A). Could you please let me know why that configuration is the right one? I thought that since A) has a complete outer electron shell, then it would be more stable and thus less likely to ionize to a 2+ cation.

  • Chemistry - electron configuration -

    Your notations are hard to read because you didn't space it properly. I have redone it below. Also, I think you should change the order, at least mentally, to what I show below.
    A) 1s2 2s2 2p6 3s2 3p6 4s2 3d10
    B) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4
    C) 1s2 2s2 2p6 3s2 3p6 4s1
    D) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2
    E) 1s2 2s2 2p6 3s2 3p2

    A) 1s2 2s2 2p6 3s2 3p6 3d10 4s2
    B) 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4
    C) 1s2 2s2 2p6 3s2 3p6 4s1
    D) 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p2
    E) 1s2 2s2 2p6 3s2 3p2

    Why did I reconfigure this? Because the OUTSIDE shell, which is the one used for most ionizations, is the outside shell and that is 4 instead of 3. I ALWAYS write the shells in numerical order (and not filling energy wise order) because students try to ionize the 3d first over the 4s. Any, here is my best guess how to anwer this question and basically it is by elimination.
    Eliminate E since the last electrons are in the 3rd shell and we know the 4th shell is easier to pick off an electron.
    Eliminate D because we PROBABLY will get +4 and not +2.
    Eliminate C since +1 is the obvious choice and not +2.
    Eliminate B since you probably will get +4(could get +6) and not +2.
    This leaves A as the only choice and +2 electrons are handy as the two outside electrons.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. electronic configuration

    how do you figure out electronic configuration of excited state?
  2. 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 …
  3. 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.
  4. chemistry - electron configuration(check)

    is the below the correct electronic configuration for arsenic?
  5. AP Chemistry

    Which of the following electron configurations correspond to an excited state?
  6. Chemistry

    Write the full electron configuration for the ground state of each of the following: a. Ni b. Ni2+ I'm not exactly sure what to do here, please help!
  7. 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: ?
  8. Chemistry

    I am having trouble figuring out the electron configuration for a carbon atom when it is in a molecule such as methane. I know that the ground state configuration for carbon is 1s2 2s2 2p2 but im not sure how to figure it out when …
  9. chem

    If you maximize the unshared electrons in the boron atom, the electron configuration is?
  10. chemistry

    The electronic configuration of manganese is: 1s22s22p63d54s2. a)What is the maximum oxidation state of manganese?

More Similar Questions

Post a New Question