What is the exact method/formula used to calculate oxidation state #'s? & how does one know when to use the correct oxidation state #? For example: Carbon carries 4,2,-4; Cl= 1,5,7,-1; and, Mn=2,3,4,7.
Thanx.
You use the seven rules in your text.
Assigning of the oxidation numbers in a compound is arbritary, and based exclusively on these rules.
http://chemistry.about.com/od/generalchemistry/a/oxidationno.htm