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Geometrical Isomerism

Which one of ...

Question

Which one of the following isomers of $P B r C l_{3}$ have no dipole moment?

Only I

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I and II

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II and III

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Only III

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Solution

The correct option is A Only I
Symmetrical molecules will have net dipole zero while unsymmetrical will have dipoles. I is symmetrical and have no dipole while II and III have dipoles.

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Similar questions

P B r_{2} C l_{3}

P B r_{2} C l_{3}

I I I

2,

I I I I

3,

I I

1,

I I - I I I I + I I I + I I I I I =

N_{2}, C O, N O^{+}

C N^{-}

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