Question

The color of $Co{Cl}_3.5{NH}_3.H_{2}O$ is:

• A. red
• B. orange
• C. orange-yellow
• D. pink

Answer 1

The correct option is D pink

$Co{Cl}_3.5{NH}_3.H_{2}O$ is pink in colour.
It has $C{o}^{3+}$ ion with $\left[Ar\right]3d^6$ electronic configuration. It has 4 unpaired electrons.