`[NiCl_4]^(2-)` paramagnetic but `[Ni(CO)_4]` diamagnetic though both are tetrahedral in shape. Explain why?

[NiCl_(4)]^(2-) is paramagnetic while [Ni(CO)_(4)] is diamagnetic though both are tetrahedral. Why?

KO_2 is paramagnetic but Li_2O is diamagnetic-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)

[CoF_6]^(3- is paramagnetic but [Co(NH_3)_6]^(3+ is diamagnetic explain.

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

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

[Ni(NH)_(4)]^(2-) is diamagnetic but [NiCl_(4)]^(2-) is paramagnetic. Give the hybridisation of Ni^(2+) in the given complex ions.

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

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

[Cr(NH_(3))_(6)]^(3+) is paramagnetic while [Ni(CN)_(4)]^(2-) is diamagnetic. Explain why?