Question

Elements of the group-15 form compounds in +5 oxidation state. However, bismuth forms only one well-characterized compound in +5 oxidation state. The compound is:

• A. $B{i}_2{O}_5$
• B. $Bi{F}_5$
• C. $BiC{l}_5$
• D. $B{i}_2{S}_5$

Answer 1

The correct option is B $Bi{F}_5$

Due to inert pair effect bismuth only Exhibit +3 oxidation state and forms trihalides only.But due to samll size and high electronegativity of Florine Bismuth forms $Bi{F}_5$ only.

Hence option B is correct.