Question

Which one has the highest bond energy?

Options

• O-O

• S-S

• Se-Se

• Te-Te

Answer 1

S-S

Explanation:

Sulphur has a stronger S-S single bond due to its ability to catenate and form stable S-S bonds in rings and chains. As we go down the group from sulphur to selenium and tellurium, bond energies decrease because of increasing atomic size and poorer orbital overlap. Hence, S-S bond energy is higher than O-O, Se-Se, and Te-Te bonds.