How Many Complexes Are Diamagnetic In Nature? Co(H20)6 3^(+) Co(NH3)6 3^(+) . NiF6 2^(-) Cr(CN)6 3^(-) Co(CN)6 3

Which of the following are diamagnetic? (I) K_(4)[Fe(CN)_(6)] (II) K_(3)[Cr(CN)_(6)] (III) K_(3)[Co(CN)_(6)] (IV) K_(2)[Ni(CN)_(4)] Select the correct answer using the codes given below:

Explain the geometry and magnetic character of complex [Cr(NH_3)_6]^(3+) .

How many complexes among the following are paramagnetic [Mn(CN)_(6)]^(3-)[Cr(H_(2)O)_(6)]^(3+)[Co(en)_(3)]^(3+) [V(CO)_(6)],[Ni(NH_(3))_(6)]^(2+)[Ni(dmg)_(3)] [Pt(Cl)_(2)(NH_(3))_(2)][Cu(NH_(3))_(4)]^(2+)[Cu(CN)_(4)]^(3-)

Find the oxidation number of Co in [Co(NH_3)_6]^(3+)

What is the coordination number of Co in [Co(NH_3)_6]^(3+) ?

Total number of low spin complexes are [Fe(CN)_6^(3-),[Co(NO_2)_6]^(3-),[FeF_6]^(3-)[IrF_6]^(3-),[Co(NH_3)_6]^(3+),[Co(H_2O)_6]^(+2),[Mn(H_2O)_6]^(3+)

Amongst the following,the total number of species which are diamagnetic is ………………. . K_(4)[Fe(CN)_(6)],K_(3)[Cr(CN)_(6)],K_(3)[Co(CN)_(6)] , K_(2)[Ni(CN)_(4)],[Co(NH_(3))_(6)]^(3+),K_(2)[TiF_(6)],[Pt(NH_(3))_(4)]^(2+)

The following complexs are given? trans- [Co(NH_(3))_(4)1_(2)]^(o+) cis-[Co(NH_(3))_(2)(en)_(2)]^(3+) trans- [Co(NH_(3))_(2)(en)_(2)]^(3+) [NiI_(4)]^(2-) [TiF_(6)]^(2-) [CoF_(6)]^(3-) Choose the correct code .

The following complexs are given? trans- [Co(NH_(3))_(4)1_(2)]^(o+) cis-[Co(NH_(3))_(2)(en)_(2)]^(3+) trans- [Co(NH_(3))_(2)(en)_(2)]^(3+) [Ni1_(4)]^(2-) [Tif_(6)]^(2-) [CoF_(6)]^(3-) Choose the correct code .

Calculate the effective atomic number of the metal atoms in the following complexes / complex ions. (A) [Cr(CO)_(6)]" "(b)[Fe(CN)_(6)]^(3-) " " (c )[Co(CN)_(6)]^(4-)" " [Ni(NH_(3))_(6)]^(2+) [Cr=24,Fe=26,Co=27 and Ni=28 as atomic numbers]