Which of the following has the lowest bond strength?
A) F-F
B) Br-Br
C) Cl-Cl
D) I-I
E) At-At

Question

Quizplus · Accepted Answer

At-At (Astatine-Astatine) bond has the lowest bond strength among the options given. This is because as you move down the halogen group in the periodic table, the atoms become larger and the bond length between the atoms increases. Longer bonds are generally weaker than shorter bonds, making the At-At bond the weakest due to the largest atomic size and bond length of astatine compared to fluorine, chlorine, bromine, and iodine.

Which of the Following Has the Lowest Bond Strength