First slide

Hydrogen

Question

In which of the following compounds does hydrogen have an oxidation state of $- 1 ?$

Very Easy

A

PH₃
B

NH₃
C

HCl
D

CaH₂

Solution

In CaH₂, H has oxidation state $(- 1) [+ 2 + 2 x = 0, x = - 1]$

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