What is the oxidation number of sodium (Na) in pure sodium, Na?
In sodium metal, the oxidation number is
Redox reaction are conceived to involve the transfer of electrons. If a species gains electrons it is said to have been
The notions of oxidation and reduction have been flying pretty fast at you. Remember that these are conceptual notions, that do not have real significance. Assignment of oxidation numbers allows us to balance complicated redox equations. So it might be an idea to suspend your disbelief when we say that
Are mass and charge conserved here? If not, they should be.