Are these 2 electron configurations correct?

0 ⤊

If not, can you correct them please? Thanks!

S2– [Ne] 3S2 3P6

Fe3+ [Ar] 4S2 3D3

2007-12-09 13:29:04 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

S2- is correct

Fe3+ is wrong. I understand how you got it, but in transiton metalcations (UNLIKE the free atoms) 3d is BELOW 4s. So Fe3+ is [Ar]3d5

2007-12-09 16:14:20 · answer #1 · answered by Facts Matter 7 · 0⤊ 0⤋

D. 1s^2 2s^2 2p^6 Originally, Magnesium has 12 electrons. Mg+2 means 2 electron less=10.

2016-05-22 09:47:45 · answer #2 · answered by ? 3 · 0⤊ 0⤋

They're right.

2007-12-09 13:50:24 · answer #3 · answered by Jared 4 · 0⤊ 1⤋