The molecules BF_3 and NF_3are covalent compounds. But BF_3is non-polar and NF_3is polar. The reason is

The molecules BF_3 and NF_3are covalent compounds. But BF_3is non-pola

1.	The molecules BF_3 and NF_3are covalent compounds. But BF_3is non-polar and NF_3is polar. The reason is
Answer» Boron is a metal and nitrogen is a gas in uncombined state BF BONDS have no DIPOLE moment where as NF bonds have dipole moment Atomic size of boron is SMALLER that that of nitrogen `BF_3 ` is planar but `NF_3` is PYRAMIDAL in shape Answer :D