Why is 'NO' paramagnetic in nature ? When does it become diamagnetic ? 

Why is KO_2 paramagnetic?

Why is sulphur paramagnetic in vapour state?

What is the nature of pure iron ? When do it become hard ?

Statement (A) Among the oxides of nitrogen, NO and NO_(2) are paramagnetic . Statement (B) NO is paramagnetic in the gaseous state and diamagnetic in liquid state. The correct answer is

(A): The ransition metal ions are generally paramagnetic in nature (R): Metal ions with incompletely filled d-orbitals are paramagnetic in nature. The correct answer is

NO is paramagnetic in gaseous state but diamagnetic in liquid and solid states - Why ?

(A) On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic (R) On heating randomsiation of magnetic domains occurs

Ferricyanide is paramagnetic, but ferrocyanide is diamagnetic. Explain.

Chlorine trioxide is paramagnetic, but chlorine hexoxide is diamagnetic. Explain.