Question

The optically inactive compound among the following is

• A. hexaamminecobalt $(III)$ chloride
• B. cis-Dichlorido bis(ethane- $ 1 $ , $ 2 $ -diamine) cobalt $(III)$ chloride
• C. tris(ethane $ -1 $ , $ 2 $ -diamine) cobalt $(III)$ chloride
• D. potassium trioxalatocobaltate $(III)$

Answer 1

Answer: (A)

Hexaamminecobalt (III) chloride
(optically inactive)

cis-Dichloridobis (ethane-$1$, $2$-diamine) cobalt (III) chloride (optically active)

Tris (ethane-1,2-diamine) cobalt (III) chloride (optically active)

Potassium trioxalatocobaltate (III) (optically active)