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Question

Which molecule does not have net zero dipole moment?


A

CO2

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B

H2

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C

Cl2

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D

H2O

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Solution

The correct option is D

H2O


H2 and Cl2 are covalent molecules made up of same elements. This, they will not have any net dipole moment.

CO2 is a linear symmetrical molecule. Thus, it will not have any net dipole moment.

O = C = O

Water looks like


Thus, water will have dipole moment because of higher electronegativity of O.


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