Question

Which of the following does not exist?

• A. $SbC{{l}_{3}}$
• B. $SbC{{l}_{5}}$
• C. $BiC{{l}_{5}}$
• D. $AsC{{l}_{5}}$

Answer 1

Answer: (C)

$BiC{{l}_{5}}$

Answer 2

Due to inert pair effect. Bismuth does not form stable + 5 oxidation state compound. Hence, $BiC{{l}_{5}}$ is not found.