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

The dipole moment of `LiH` is `1.964 xx10^(-29)C-m` and the interatomic diatance between `Li` and `H` in this molceule is `1.596Å` .What is the per cent ionic character in `LiH`.

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The correct Answer is:
76.82
`mu_("molecule")=deltaxxd`
Given, `d=1.596+A6Å=1.596xx10^(-10)m`
`mu=1.964xx10^(-29)cm`
`therefore1.964xx10^(-29)=delxx1.596xx10^(-10)`
`thereforedelta=1.2306xx10^(-19)` couloumb
`therefore` Charge on electron `=1.602xx10^(-19)C`
`therefore` % Ionic nature `=(1.2306xx10^(-19))/(1.602xx10^(-19))xx100=76.82%`
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