Question

Which of the following is not a neutral molecular complex?

• A. $\left[Co\right(N{H}_3{)}_{3}C{l}_3]$
• B. $\left[Ni\right(CO{)}_4]$
• C. $\left[Cu\right(N{H}_3{)}_4]S{O}_4$
• D. All of the above

Answer 1

Answer: (C)

$\left[Cu\right(N{H}_3{)}_4]S{O}_4$

$\left[Cu\right(N{H}_3{)}_4]S{O}_4$ is not a neutral molecular complex. It consists of positively charged $\left[Cu\right(N{H}_3{)}_4{]}^{+2}$ ion and $S{O}_4^{-2}$ ion. So, C is the correct answer.