Analysis shows that nickel oxide has the formula Ni0.98 O1.00. What fractions of the nickel exist as Ni2+ and Ni3+ ions?

Given formula Ni0.98O=Ni98O100let us consider number of Ni(II) =xthen number of  Ni(III) = 98-xAccording to electrical neutrality principlex(2)+(98-x)3+100(-2)=0           x ( Ni(II) )= 94    number of Ni(III) =98-94=4,fraction of Ni(II)=9498×100=95.91=96% and Ni(III) =4%