The interatomic distances in H_2 and Cl_2 mol | vedclass

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(B) The bond length of a molecule $AB$ can be estimated using the covalent radii of atoms $A$ and $B$ as $d_{AB} = r_A + r_B$.For $H_2$ molecule,the b

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$136$

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(B) The bond length of a molecule $AB$ can be estimated using the covalent radii of atoms $A$ and $B$ as $d_{AB} = r_A + r_B$.For $H_2$ molecule,the bond length is $74 \, pm$,so the covalent radius of $H$ is $r_H = \frac{74}{2} = 37 \, pm$.For $Cl_2$ molecule,the bond length is $198 \, pm$,so the covalent radius of $Cl$ is $r_{Cl} = \frac{198}{2} = 99 \, pm$.Therefore,the bond length of $HCl$ is $r_H + r_{Cl} = 37 + 99 = 136 \, pm$.

The interatomic distances in $H_2$ and $Cl_2$ molecules are $74 \, pm$ and $198 \, pm$ respectively. The bond length of $HCl$ is $.............$ $pm$.

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