Is hydrogen peroxide paramagnetic

Peroxide ion is

O

22-

is diamagnetic. It has the hybridisation:

No. of electrons: 18

σ1s2

σ*1s

2 σ2s2

σ*2s

2 σ2px2

Ï€2py2

Ï€2pz2

Ï€*2py2

Ï€*2pz2

As it has no unpaired electrons, it is diamagnetic.