Question

Explain y beh2 molecule has zero dipole moment although the be-h bonds are polar...?

Answer 1

The bonds are polar and dipole moment developed towards hydrogen is cancelled by other hydrogen so its dipole becomes zero

Answer 2

Explanation:

It has a linear structure. Dipole moments of each H-Be bond are equal and are in opposite direction. Therefore, they nullify each other. Hence, BeH2 molecule has zero dipole moment.