Among the followin the oxidation state of N is lowest in

Options

A. `NH_(3)`
B. `HN_(3)`
C. `N_(2)H_(4)`
D. `NO_(2)`

Answer

A

Explanation

(a) Oxidation state of N- atom in the given molecules can be calculated as.
`NH_(3) : x+3xx(+1)=0,x=-3`
`HN_(3): +1+3xx x =0,, x=-(1)/(3)`
`N_(2)H_(4), 2x+(+1)xx4=0, x=+4`
`NO_(2), x+23xx(-2)=0, x=+4`
Hence, `NH_(3)` has the lowest oxidation state.