Question

What will be the oxidation state of Hydrogen in $H_{2}S$ and $LiH$ respectively?

• A. $+1$ and $-1$
• B. $+0.5$ and $-0.5$
• C. $-1$ and $+1$
• D. $+2$ and $-1$

Answer 1

The correct option is A $+1$ and $-1$

For $H_{2}S$
Since Sulphur is a more elctronegative element, charge on sulphur is $-2$
Overall charge on $H_{2}S=0$
Let $x$ be the oxidation state of hydrogen in $H_{2}S$
$2x-2=0x=1$

For $LiH$
Since Sodium being the more elctropositive element , charge on $Li$ will be $+1$
Overall charge on $LiH=0$
Let $y$ be the oxidation state of hydrogen in $LiH$
$(+1)+y=0y=-1$