Question

The oxidation states exhibited by hydrogen in its various molecular forms/compounds are :

• A. -1 only
• B. zero only
• C. +1,-1 and 0
• D. +1 only

Answer 1

The correct option is C +1,-1 and 0

Oxidation state of hydrogen in $H_2$ is $0$

Oxidation state of hydrogen in $HCl$ is $+1$

Oxidation state of hydrogen in $LiH$ is $-1$

Therefore, hydrogen can exhibit $-1,0,+1$ oxidation states in various compounds.