Chemistry · CHEMICAL BONDING AND MOLECULAR STRUCTURE

According to the tabulated covalent radii, the covalent radius of carbon is \( 77\text{ pm} \) (single bond) and that of chlorine is \( 99\text{ pm} \). If the bond length in \( \text{C}-\text{Cl} \) is taken as the sum of their covalent radii, calculate the percentage increase in bond length when comparing a \( \text{C}-\text{C} \) single bond (\( 154\text{ pm} \)) to this estimated \( \text{C}-\text{Cl} \) bond.

1. A
   \( 11.45\% \)
2. B
   \( 12.50\% \)
3. C
   \( 16.67\% \)
4. D
   \( 14.28\% \)