Question

explain why BeH2 molecule has zero dipole moment although the Be-H bonds are polar..?​

Answer 1

Explanation:

Since there is no lone pair at the central atom (Be) and there are two bond pairs, BeH2 is of the type AB2.. Dipole moments of each H–Be bond are equal and are in opposite directions. Therefore, they nullify each other. Hence, BeH2 molecule has zero dipole moment.

Answer 2

Explanation:

Since there is no lone pair at the central atom (Be) and there are two bond pairs, BeH2 is of the type AB2. ... Dipole moments of each H–Be bond are equal and are in opposite directions. Therefore, they nullify each other. Hence, BeH2 molecule has zero dipole moment.