Q. Which of the following does not exist in free form?
A) $BF_{3}$
B) $BH_{3}$
C) $BCl_{3}$
D) $BBr_{3}$
Explanation
(b)
Boron from different hydride of general formula $B_{n}H_{n + 4}\ and\ B_{n}H_{n + 6}\ but\ BH_{3}\ is$ unknown
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.