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)

Due to inert pair effect. Bismuth does not form stable + 5 oxidation state compound. Hence, $BiC{l}_5$ is not found.