Question

Which of the following bonds has the higher energy?

• A. $Se-Se$
• B. $Te-Te$
• C. $S-S$
• D. $O-O$

Answer 1

Answer: (C)

$S-S$

On moving downwards in a group, as the size increases, element-element bond length increases and thus, the strength of element-element bond decreases.

Since the size of $O-atom$ is very small and its electronegativity is high, $O$ atom experience some repulsion de to which, $O-O$ bond energy is lesser than the $S-S$ bond energy.

Hence, option C is correct.