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Question

Estimate the percent ionic character of the HBr molecule, given that the dipole moment (μ) is 0.79D and HBr bond length 151 pm.

A
10.9
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B
11
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C
12
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D
8.2
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Solution

The correct option is A 10.9
Calculate value of μ=e×l
=4.8×1010esu×1.51×1010cm
=7.248×1018esucm
(1×1018esucm=1Debye)=7.248Debye
Observed value of μ=observedvalue×1000clculatevalue
=0.797.248×100
=10.9%

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