Question

Among the following which one will have the largest O – O bond length ?

• A. KO2
• B. O2
• C. O2+ [AsF6] –
• D. K2O2

Answer 1

Answer: (D)

K2O2

Answer 2

(1) O2– B.O = $1\frac{1}{2}$ (2) O2 B.O = 2

(3) O2+ = $2\frac{1}{2}$ (4) O22 – = 1

Bond order $\propto \frac{1}{bondlength}$.