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  4. The electronegativity of H and Cl are 2.1 and 3.0 respectively. The correct statement about the nature of HCl is

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Q. The electronegativity of H and Cl are 2.1 and 3.0 respectively. The correct statement about the nature of HCl is

Chemical Bonding and Molecular Structure

Solution:

% ionic character $= 16(χ_A - χ_B) + 3.5(χ_A - χ_B)^2$
(Here $χ_A$ and $χ_B$ are the electronegativities of bonded atoms of chlorine and hydrogen)
$= 16(3.0 - 2.1) + 3.5(3.0 - 2.1)^2$
$= 14.4 + 2.835 = 17.235 ≈ 17$%