Question

The oxidation numbers of hydrogen in KH, MgH₂ and NaH are respectively

(a) +2,+ 1 and -2 

(b) +1,+ 1 and+ 1

(c) - 1, 1 and- 1 

(d) -2, -3 and-1

Answer 1

Correct option  (c) - 1, 1 and- 1 

Explanation:

Hydrogen is present as hydride ion in these molecules i.e., oxidation state is - 1.