Question

what is the charge on copper in cuf₂? a 1− b 2− c 1+ d 2+

Explanation:

Step1: Recall fluoride ion charge

Fluoride ion ($F^-$) has a charge of - 1. In $CuF_2$, there are 2 fluoride ions.

Step2: Calculate copper charge

Let the charge on copper be $x$. The sum of the oxidation - states in a neutral compound is 0. So $x+2\times(-1)=0$. Solving for $x$ gives $x = + 2$.

Answer:

D. 2+