Question

Which of the following are false about $\left[ Cu \left( NH _{3}\right)_{4}\right] SO _{4}$ ?
I. It is paramagnetic with one unpaired electron in the $d$-subshell.
II. Its aqueous solution cannot conduct electricity.
III. It gives white $BaCl _{2}$ solution.
IV. It is a square planar complex.
Choose the correct option.

• A. $I$ and $II$
• B. $II$ and $III$
• C. $III$ and $IV$
• D. $I, II$ and $IV$

Answer 1

Answer: (A)

$\left[ Cu \left( NH _{3}\right)_{4}\right] SO _{4}$ is paramagnetic with one unpaired electron in the $d$-subshell. Its aqueous solution cannot conduct electricity.