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CBSE Class 11-science Answered

"BeH2 molecule has zero dipole moment although the Be-H bonds are polar." Explain this sentence on the basis of the concept of dipole moment.

Asked by Topperlearning User | 09 Oct, 2014, 08:42: AM
Expert Answer

The BeH2 molecule is linear with (H-Be-H) bond angle equal to 180o.

Although the Be-H bonds are polar due to the difference in the electronegativities of Be and H atom, the bond polarities cancel each other.

As a result the resultant dipole moment is zero.

Answered by | 09 Oct, 2014, 10:42: AM
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