Question

In which of the following molecules the central atoms does not retain any lone pair of electrons?

• A. $NO_{2}$
• B. $NH_{3}$
• C. $BF_{3}$
• D. $H_{2}O$

Answer 1

Answer: (C)

$BF_{3}$

Answer 2

: In all other molecules, N and O retain lone pair of electrons.