Question

Which of the following molecules have dipople moment?
(i) $Be{F}_2$ (ii) $B{F}_3$ (III) $N{F}_3$ (iv) $H_{2}S$

• A. (i) and (iii)
• B. (iii) and (iv)
• C. (ii) and (iii)
• D. Only (iii)

Answer 1

The correct option is B (iii) and (iv)

$N{F}_3$ and $H_{2}S$ has dipole moment, aue to electrongativity and structure

But $Be{F}_2$ and $B{F}_3$ will not have dipole moment.