[(CoCl_(4))^(2-)],[[CoBr_(4)]^(2)],[[Col_(4)]^(2-)],[[Co(NCS)]

Write the name, the state of hybridization, the shape and the magnetic behaviour of the following complexes : [CoCl_(4)]^(2-),[Ni(CN_(4)]^(2-), [Cr(H_(2)O)_(2)(C_(2)O_(4))_ (2)]^(-) ("At.No.": Co= 27, Ni = 28, Cr = 24)

Write the name, the state of hybridization, the shape and the magnetic behaviour of the following complexes : [CoCl_(4)]^(2-),[Ni(CN_(4)]^(2-), [Cr(H_(2)O)_(2)(C_(2)O_(4))_ (2)]^(-) ("At.No.": Co= 27, Ni = 28, Cr = 24)

[Co(H_(2)O)_(4)]^(2+),[CoCl_(4)]^(2-)and[Co("dmg")_(2)] are complexes or Co(II) but magnetic moments of [Co(H_(2)O)_(4)]^(2+)and[CoCl_(4)]^(2-) is higher ( mu=3.87 Bm for each) than [Co("dmg")_(2)][mu=1.73"BM"] , explain.

Identify the number of complexes that are optically active [Co("en")_(3)]^(3+), [Co(NH_(3))_(4)Cl_(2)]^(+) [CoCl_(2) ("en")_(2)] , [Co(NH_(3))_(3)(NO_(2))_(3)]

Specify the oxidation numbers of metals in the following co-ordination entites : (a) [Co(H_(2)O)(CN)(en_(2))]^(2+) (b) [PtCI_(4)]^(2-) (c) [Cr(NH_(3))_(3)CI_(3)] (D) [CoBr_(2)(en)_(2)]^(+) (e) K_(3)[Fe(CN)_(6)] .

The number of unpaired electrons in [CoCl_(4)]^(2-) , [Ni(CO)_(4)] and [Cu(NH_(3))_(6)]^(2+) respectively are -

The correct order of magnetic moment (spin values in is . (Atomic number Mn=25,Fe=26,Co=27) (I) [MnBr_(4)]^(2-) (II) [Fe(CN)_(6)]^(4-) (III) [CoBr_(4)]^(2-) .