Amongst $\mathrm{BeF}_{2}, \mathrm{BF}_{3}, \mathrm{H}_{2} \mathrm{O}, \mathrm{NH}_{3}, \mathrm{CCl}

Question

Amongst $\mathrm{BeF}_{2}, \mathrm{BF}_{3}, \mathrm{H}_{2} \mathrm{O}, \mathrm{NH}_{3}, \mathrm{CCl}_{4}$ and HCl , the number of molecules with non-zero net dipole moment is $\qquad$.\

Professor PC Thomas Classes · Answer

(3) : Among the given molecules, $\mathrm{BeF}_{2}, \mathrm{BF}_{3}$ and $\mathrm{CCl}_{4}$ are non-polar and have net dipole moment equal to zero, while $\mathrm{H}_{2} \mathrm{O}, \mathrm{NH}_{3}$ and HCl possess a nonzero net dipole moment.\