Analysis shows that nickel oxide has formula `Ni_(0.98)O_(1.0)`. What fractions of the nickel exist as `Ni^(2+)` and `Ni^(3+)` ions ?

Explanation

Let there are x ions of `Ni^(+3)` and (98-x) ions of `Ni^(+2)`
`therefore` 3x + 2 (98-x)=200
x=4
`therefore ` % of `Ni^(+3)=(4xx100)/98`=4% and % of `Ni^(+2)` =96%