Why BeH2 molecule has a zero dipole moment although the Be-H bonds are polar?
Answers
Answered by
223
The Lewis structure of BeH2 is as follow :
H: Be: :H
There is no lone pair at the central atom(Be)and there are two bond pairs. Hence BeH2 is a type of AB2. It has a linear structure.
H___ Be___ H
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.
H: Be: :H
There is no lone pair at the central atom(Be)and there are two bond pairs. Hence BeH2 is a type of AB2. It has a linear structure.
H___ Be___ H
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.
Answered by
15
Answer:
It is zero
Explanation:
According to the VSEPR Theory, the structure of BeH2 is linear. And since the Be is more electronegative than H the dipole moments are in opposite direction. This results in resultant dipole moment =0
H➪Be☜︎︎︎H
Even when they are polar, they have zero dipole moment.
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