explain y BeH2 molecule has zero dipole moment although the Be-H bonds are polar - Chemistry - Chemical Bonding and Molecular Structure

Question

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

Pankaj Singh · Accepted Answer

The Lewis structure for BeH2 is as follows:

There is no lone pair at the central atom (Be) and there are two bond pairs Hence, BeH2 is of the type AB2 It has a linear structure

Dipole moments of each Hâ€“Be bond are equal and are in opposite directions Therefore, they nullify each other Hence, BeH2 molecule has zero dipole moment

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