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What is the bond length (distance between nuclei) of HCl, given that the covalent radius of hydrogen is 0.37 Angstrom and the covalent radius of chlorine is 1.67 Angstrom?

1. 2.04 Angstrom
2. 1.96 Angstrom
3. 2.12 Angstrom
4. 1.0 Angstrom

Correct answer: 2.04 Angstrom

Solution

According to the concept of covalent radius, the bond length between H and Cl is the sum of their respective covalent radii: 0.37 + 1.67 = 2.04 Angstrom.

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