Question

$N{F}_3$ and $B{F}_3$ both are covalent, but $B{F}_3$ is non-polar, while $N{F}_3$ is polar because :

• A. Boron is non metal in free state, while $N_2$ is gas
• B. There is no dipole moment in $B-F$ bond while $N-F$ bond have some dipole moment.
• C. $B{F}_3$ is planar while $N{F}_3$ is pyramidal
• D. Boron atom is smaller than nitrogen atom

Answer 1

Answer: (B)

$N{F}_3$ and $B{F}_3$ both are covalent but $B{F}_3$ is non polar, while $N{F}_3$ is polar because there is no dipole moment in $BF$ bond while $NF$ bond have some dipole moment.