Question

which sequence correctly describes relative Bond strength of oxygen molecule superoxide ion and peroxide ion​

Answer 1

Answer:

The sequence that best describes the relative bond strength of oxygen molecule, superoxide ion and peroxide ion is as follows;

O2 > (O2)-1 > (O2)-2

Step-by-step explanation:

Bond strength or stability of the molecule or ion depends on the bond order. Bond order is directly proportional to the stability. The higher the bond order is, the higher the stability of the molecule or ion.

Superoxide ion is represented by (O2)-1. It has two (2) oxygen atoms with -1 charge.

Peroxide ion is represented by (O2)-2. It has two (2) oxygen atoms with -2 charge .

Considering No. of e in bonding and antibonding molecular orbitals, bond order of superoxide ion (O2)-1 is 6-3/2 =1.5 and bond order of peroxide ion (O2)-2 is 6-4/2 = 1.

The bond order of an oxygen molecule (O2) is 2.

So, the sequence that best describes the relative bond strength of an oxygen molecule, superoxide ion and peroxide ion is;

O2 > (O2)-1 > (O2)-2

I hope this will help you.