Question

Hello,

How can you tell if a molecular ion will have one or ore unpaired eletrons?

For example,
"Which of the following molecules is expected to have one or more unpaired electrons? Check all that apply.

O2-
F2+
N22-
O22-"
Any help would be appreciated.

Answer 1

E. g., for Fe (Z=26), the electronic configuration is:
\[1s ^{2}2s ^{2}p ^{6}3s ^{2}p ^{6}d ^{6}4s ^{2}\]
The 'd' orbital is the one that has l=2 allowed the 'm' from -2, 0, 2 (5 orbitals)
First, you fil the ones with spin 1/2 (x) and then the -1/2 (y)
xy x x x x (6 electrons, 4 unpaired).

Answer 2

ur a life saver <3

Answer 3

Thanks :D.

Answer 4

You may wanna check an electronic configuration page for more info.

Answer 5

do you know where i can go?

Answer 6

Here's a list http://en.wikipedia.org/wiki/Electron_configurations_of_the_elements_%28data_page%29

Answer 7

TranceNova is right. :)