Q. Which one of the following pentafluorides cannot be formed?
A) PF_{5}
B) AsF_{5}
C) SbF_{5}
D) BiF_{5}
Explanation
(d)
The +5 oxidation state of Bi is unstable due to inert pair effect. Thus, BiF_{5}cannot be formed.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.