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What will be the distance between H and Cl atom in HCl. The radius of hydrogen is $0.37 Å$ and the radius of chlorine is $1.67 Å$ ?

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$2.04 Å$

$1.96 Å$

$2.12 Å$

$1.0 Å$

answer is B.

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Detailed Solution

Bond length of single covalent bond $= r_{A} + r_{B} - 0.09 (Δ E N)$

Bond length $(d_{H - C l}) = r_{H} + r_{C l} - 0.09 (Δ E N)$

$r_{H} = 0.37 Å; r_{C l} = 1.67 Å a n d Δ E N = 3.0 - 2.1 = 0.9$

$d_{H - C l} = 0.37 + 1.67 - 0.09 (0.9)$ or,

$d_{H - C l} = 2.04 - 0.08 = 1.96 Å$

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