Question

The effective atomic number of central $Cu$ (at. no. $29$) metal in $\left[Cu{\left(N{H}_3\right)}_4\right]S{O}_4$ is

• A. 29
• B. 30
• C. 35
• D. 36

Answer 1

Answer: (C)

$EAN$ of $Cu$ in $\left[Cu{\left(N{H}_3\right)}_4\right]S{O}_4$ is as
$EAN=Z-(O.N.)+2(C.N.)$
$EAN=29-2+4\times 2=35$