Question

For each set, arrange the bonds according to strength.

a. I−I
b. Cl−CI
c. Br−Br
d. N−I
e. N−F
f. N−CI

1. strongest bond
2. weakest bond

Answer 1

The strength of a bond between two atoms increases as the number of electron pairs in the bond increases. Bonds between hydrogen and atoms in the same column of the periodic table decrease in strength as we go down the column. Bonds between like atoms usually become weaker as we go down a column, with some exceptions.

Step-by-step explanation:

The strength of a bond between two atoms increases as the number of electron pairs in the bond increases. Generally, as the bond strength increases, the bond length decreases. Bonds between hydrogen and atoms in the same column of the periodic table decrease in strength as we go down the column. For example, an H-F bond is stronger than an H-I bond. Bonds between like atoms usually become weaker as we go down a column, with some exceptions. For example, the C-C single bond is stronger than the Si-Si single bond.