The formula of nickel oxide is Ni _ 0.98 O _ 1.00^ . What is the approximate percentage of Ni ⁺² in it?

Step-by-step solution

Let there be 100 formula units of Ni _ 0.98 O ₁₀₀ . Thus, for 100 O ²⁻ ions, there are 98 nickel ions ( Ni ²⁺ . or . Ni ³⁺ ) . Let x = number of Ni ²⁺ ions. Number of Ni ³⁺ ions =98- x . For an electrically neutral compound:- aligned & 2 x+3(98-x)+100(-2)=0 & x=94 aligned So, % of Ni ²⁺= 94 98 100=96 %