Compare `[Cr(H_2O)_2 (C_2O_4)_2]^- , [Ni (CO)_4], [CoF_4]^(-2)` in terms of shape, magnetic behaviour , and hybrid orbitals

Compare the following complexes with respect to their shape , magnetic behaviour and the hybrid orbitals involved : (i) [CoF_(4)]^(2-) " " (ii) [Cr(H_(2)O)_(2) (C_(2)O_(4))_(2)]^(-) " " (iii) [Ni(CO)_(4)] (Atomic number : Co = 27 , Cr = 24 , Ni = 28)

Compare the following complexes with respect to structural shapes of units , magnetic behaviour and hybrid orbitals involved in units (i) [Ni(CN)_(4)]^(2-) (ii) [NiCl_(4)]^(2-) (iii) [At . Nos .: Ni =28 , Co =27]

[Co(Cr_(2)O_(4))_(3)]^(3-) is a

Explain the following complexes with respect to structural shapes of units, magnetic behaviour and hybrid orbitals involved in the units : [Cr(NH_3)_6]^(3+) , [Cr(NH_3)_6]^(3+) , [Ni(CO)_4]

Amongst [NiCl_(4)]^(2-), [Ni(H_(2)O)_(6)]^(2+), [Ni(PPh_(3))_(2)Cl_(2)], [Ni(CO)_(4)] and [Ni(CN)^(2-) the paramagnetic species are

Among [Ni(CO)_(4)], [NiCl_(4)]^(2-), [Co (NH_(3))_(4) Cl_(2)] Cl, Na_(3) [CoF_(6)], Na_(2)O_(2) and CsO_(2) , the total number of paramagnetic compounds is