1) The bond length (pm) of $F_{2},H_{2},Cl_{2}$ and $I_{2}$ respectively is A) 144,74,199,267 B) 74,144,199,267 C) 74,267,199,144 D) 144,74,267,199 Answer: Option BExplanation:As the size of the halogen atom increase, the bond length X-X bond in $X_{2}$ molecule increase from $F_{2} $ to $I_{2}$ hence, the correct answer is (2).
