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Q.

A polar molecule AB have dipole moment 3.2 D (Debye) while the bond length is 1.6 A. Find the percentage ionic character in the molecule.

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a

41.6%

b

39.6%

c

31%

d

None of these

answer is B.

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Detailed Solution

The theoretical dipole moment is,

$μ_{theo} = \frac{4.8 \times 10^{- 10} \times 1.6 \times 10^{- 8}}{10^{- 18}} = 7.68 D$

the percentage ionic character in the molecule.

$= \frac{3.2}{7.68} \times 100 = 41.6 %$

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A polar molecule AB have dipole moment 3.2 D (Debye) while the bond length is 1.6 A. Find the percentage ionic character in the molecule.