Which of the species is diamagnetic?
O2−
O2
O22−
O2 has 2 unpaired electrons and O2−2 has no unpaired electrons
Among the following the total no. of species which are paramagnetic
O2,S2,CN−,NO+,O2+2,O2−2,B2,N2−2,O+2,NO,NO2,N2O___