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The dipole moment of LiH is 1.964xx10^(-...

The dipole moment of LiH is `1.964xx10^(-29)` Cm and the intermolecular distance between Li and H is 1.596 A. What is percentage of ionic character in the molecule?

Text Solution

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Theoretical dipole noment (dipole moment for 100% ionic character)
= (electronic charge) `xx` (inter-atomis distance)
`=(1.602xx10^(-19)C)xx(1.596xx10^(-10)m)`
`=2.557xx10^(-29)cm.`
Percentage ionic character `=("Experimental value of "mu_("observed"))/("Theoretical value of"mu_(ionic))xx100=(1.964xx10^(-29)(Cm))/((2.557xx10^(-29)Cm))xx100=76.8%`
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