Auto-ionisation of liquid `NH_(3)` is
`2NH_(3) hArr NH_(4)^(o+) +NH_(2)^(Theta)`
with `K_(NH_(3)) = [NH_(4)^(o+)] [NH_(2)^(Theta)] = 10^(-30) at -50^(@)C` Number fo amide ions `(NH_(2)^(Theta))`, present per `mm^(3)` of pure liquied `NH_(3)` is

Options

A. 602
B. 301
C. 200
D. 100

Answer

A