Why is `TiCI_2` paramagnetic but `TiO_2` is diamagnetic? (Atomic number of Ti is 22)

Why is TiCl_(2) paramagnetic but TiO_(2) is diamagnetic ? (atomic number of Ti is 22).

KO_2 is paramagnetic but Li_2O is diamagnetic-Why ?

O_2 is paramagnetic, why?

Write IUPAC name of the complex [Cr(NH_(3))_(4)Cl_(2)]Cl. What type of isomerism is exhibited by the complex [Co(en)_(3)]^(3+) (en = ethane - 1, 2 - diamine) ? Why is [NiCl_(4)]^(2-) paramagnetic but [Ni(CO)_(4)] is diamagnetic ? (Atomic no : Cr = 24, Co = 27, Ni = 28)

Why is [NiCl_(4)]^(2-) paramagnetic while [Ni(CN_(4))]^(2-) is diamagnetic ? (At. No. of Ni = 28)

B_(2) is paramagnetic but C_(2) is not. Explain.

The alkali metals are paramagnetic but their salts are diamagnetic-why?

Explain why N_(2)O_(4) is diamagnetic .

Paramagnetic behaviour of B_(2) is due to the presence of -

Copper(I) is diamagnetic but copper(II) is paramagnetic-why?