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Question

The dipole moment of hydrogen chloride, with bond distance 127 pm, is 1.03D. The percent ionic character of its bond is about:

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Solution

Theoritical dipole moment =q×d=1.6×1019×127×1012=203.2×1031 Coloumb meter =6.1D (as 1D=3.33×1030C.m)

So, % ionic character =observed dipole momenttheoretical dipole moment×100=1.036.1×100=17%

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