[redfox]

I'm confused and I'm sure it's a relatively easy problem but can't seem to get my
head around it! I need to calculate oxidation states of metals in molecules such
as MoH₄(PR₃)₄ and (C₆H₆)₂Mo

I really don't want just answers to these as I already have them, but I'm not sure how
to figure them out. How do I know that PR₃ has an oxidation state of 0? How
would I go about counting it and other problems like it?

The more info I can get the better!

Thanks v much:)

[azmanam]

Excellent, excellent chart on page 4/5 to help you here.  I use this chart almost every time I count electrons and determine oxidation states:

http://bama.ua.edu/~kshaughn/ch609/notes/2-18-electron.pdf

[redfox]

You are pure genius and I think I love you!!!

Thanks very much for helping!!


Sincerely...a very happy Emily