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HBr has dipole moment 2.6xx10^(-30)C-m`. If the ionic character of the bond is 11.5%. Calculate the interatomic spacing.
A. `1.4 overset(@)A`
B. `2.4 overset(@)A`
C. `0.4overset(@)A`
D. `2.1 overset(@)A`

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Best answer
`%IC=(mu_("particle"))/(mu_("Thermicle"))xx100`
`11.5=(2.6xx10^(-30))/(1.6xx10^(-19)xxd)xx100`
`therefore d=1.4xx10^(-10)m`
or `d=1.4overset(@)A`

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