Question

what is the oxidation number of na in nah2

Answer 1

The compound is

Sodium Hydride

thus the Formula is NaH2

there fore pretending the oxidation of N.a. as X and we know that H has -1 ( H IS HYDRIDE HERE ) O.S.

THUS WE GET AS

X - 2 =0

THERE fore X = +2

thus Na has +2 O.s.