Question

Which bond angle $\theta$ gives maximum dipole moments for triatomic molecule $X{Y}_2$ ?

• A. $\theta ={90}^{\circ }$
• B. $\theta ={120}^{\circ }$
• C. $\theta ={180}^{\circ }$
• D. Both B and C

Answer 1

The correct option is A $\theta ={90}^{\circ }$

This formula for dipole moment.

cos 120 and cos 180 gives a negative value. cos 90 is 0. Hence the answer is option A