Q. Which molecule is an electron donor?
A) $NH_{3}$
B) $BF_{3}$
C) ${PF}_{5}$
D) $AsF_{5}$
Explanation
(a)
$NH_{3}$ (ammonia) possess an unshared electron pair on N-atom hence, it can donate electron pair. Such species are called Lewis bases. $BF_{3}$ acts as Lewis acid.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.