KCET2010ChemistryChemical Bonding and Molecular Structure
Peroxide ion .......
Options
- A(ii) and (iii)
- B(i), (ii) and (iv)
- C(i), (ii) and (iii)
- D(i) and (iv)
Correct answer
A. (ii) and (iii)
Step-by-step solution
Peroxide ion is O ₂²⁻ aligned & O ₂²⁻(18)= 1 ~s ², * 1 ~s ², 2 ~s ², * 2 ~s ², 2 p _ z ², & 2 p _ x ² 2 p _ y ², ^ * 2 p _ x ² * 2 p _ y ² & Bond order = N _ b - N _ a 2 = 10-8 2 =1 aligned It contains four completely filled antibonding molecular orbitals. Since, all the electrons are paired, O ₂²⁻ is diamagnetic. Peroxide ion is isoelectronic with argon, not with neon.