Sorry but I need information about N2-. Thank you for anyone who is willing to do this?

Question

How many valence electrons does the ion have ?

How many electrons are in bonding orbitals ?
Enter an integer as an answer

How many electrons are in anitbonding orbitals ?
Enter an integer as an answer.

What is the bond order of the ion
Enter an integer or a decimal fraction e.g. 1 3.5

MaryJane W
I found the answer already, however mine is (N2-) not (N2-2), just wanted to make it clear.
1. 11
2. 8
3. 3
4. 2.5

I found the answer on http://books.google.com/books?id=x6ct1xjyJpoC&pg=PA387&dq=what+is+bond+order+for+N2-&sig=ANKQTnCqF_nBBYNUo2h3sRjGHqo#PPA386,M1

pages 386-388

OR google:

what is bond order for N2-,

go to book results and 6th one called Engineering Chemistry

btw what college do you go to?

Answer 1

I'm trying to find answers to the same question. I know how to answer the first one... Each nitrogen atom has 5 electrons already, and since the charge is -2, the nitrogen atoms in this ion each have an extra electron. Therefore both nitrogen atoms have 6 valence electrons and I'll let you do the math and figure out how many there are total. (6+6).
I assume you are in my class since you are answering the same problems as me. Assuming you have the same text book as me, section 8.12 explains what bonding and antibonding molecular orbitals are, but it does not give a clear explanation of how to find how many are in an ion... I'm really stumped right now so if anyone has any answers, please share.

By the way, I already tried 2 for the second question and that is not the answer... I tried it before I understood what it was asking so now I only have 3 tries left and I can't afford to waste any.
Also, to answer the fourth question...
The formula for bond order is this:
bond order = (nB - nA) / 2
nB is the number of electrons in bonding molecular orbitals,
nA is the number of electrons in antibonding molecular orbitals.
So once you figure out 2 and 3, 4 will be a piece of cake. This is some of the hardest stuff we've done in chem so far and I just don't get it.

Answer 2

I didn't even know that such an ion existed. Better look it up HCP. Since N2 is most probably a sp-hybrid orbital molecule, to form a negative ion would require one of the electron pairs to be moved back onto one of the nitrogen molecules. Then there should be 4 electrons in bonding orbitals and 7 that are elsewhere.

Answer 3

You will get a lot of info on

http://en.wikipedia.org/wiki/Nitrogen