Oxidation Numbers???

Question

Determine the oxidation numbers for each of the indicated elements in the following molecular species.

(a) N in NO2-

(b) Cl in ClO4-

(c) P in P2O5

(d) O in H2O2

(e) Fe in Fe(CN)6 ^3-





Thanks for the Help!!!

Answer 1

Do it yourself. H is almost always +1
O is almost always -2 except in (d)
The (CN) ion has a -1 charge.