Question

Identify the number of lone pairs donated by the donor in the formation of ammonia boron trifluoride?

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

Answer: (A)

1

The number of lone pairs donated by donor $\left(N\right)$ in the formation of $ammoniaborontrifluoride$ is $1$ as shown in the figure.

$H_{3}N\to B{F}_3$

There is only one coordinate covalent bond between $N$ atom and $B$ atom between the two molecules.