Covalent radius of \( { }_{82} \mathrm{~Pb} \) is \( 1.53 \AA \). Calculate its electronegativit...

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Covalent radius of \( { }_{82} \mathrm{~Pb} \) is \( 1.53 \AA \). Calculate its electronegativity at Allred-Rochow scale.
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