Analysis shows that nickel oxide has the formula `Ni_(0.98)O_(1.00)`. What fractions of nickel "exist" as `Ni^(2+)` and `Ni^(3+)` ions?
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`Ni_(0.98)O_(1.00)` Let `Ni^(2+)` be `a` and `Ni^(3+)` be `(1-a)` , then average oxidation no. of `Ni`. `axx2+(1-a)xx3=(2xx100)/(0.98)` `:. a=0.959` `:. Ni^(2+)=0.959,Ni^(3+)=0.041` The percentage of `Ni^(2+)` is `95.9%~~96%` and that of `Ni^(3+)=4%`
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