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Q. The percentage ionic character in $Cs - Cl$ bond in $CsCl$ molecule is ___ The electronegativity values of $Cs$ and $Cl$ are $0.7$ and $3.0$ respectively.

Chemical Bonding and Molecular Structure

Solution:

$X _{ A }- X _{ B }= X _{ Cl }- X _{ Cs }=(3.0-0.7)=2.3$

Percentage ionic character in $Cs - Cl$ bond

$=\left[16 \times 2.3+3.5 \times(2.3)^{2}\right] $

$=[36.8+18.51]=55.31$