Intensity of color for `[Co(CN)_6]^(3-),[Co(H_2O)_6]^(2+),[Co(Cl)_4]^(2-)`

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+)

For the given set of complexes : (P) [Co(CN)_(6)]^(3-)" and "[Co(H_(2)O)_(6)]^(3+) (Q) [Co(H_(2)O)_(6)]^(3+)" and "[Rh(H_(2)O)_(6)]^(3+) (R ) [Co(H_(2)O)_(6)]^(3+)" and "[CoF_(6)]^(3-) (S) [Co(NH_(3))_(6)]^(3+)" and "[CoF_(6)]^(3-) Select the correct order for Delta_(0) :

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-)

Which complex of the following pairs has the larger value of Delta_(0) (i) [Co(CN)_(6)]^(3-) and [Co(NH_(3))_(6)]^(3+) (ii) [Co(NH_(3))_(6)]^(3+) and [CoF_(6)]^(3-) (iii) [Co(H_(2)O)_(6)]^(2+) and [Co(H_(2)O)_(6)]^(3+) .

Identify the correct order of CFSE of following compound 1 [Co(H_2O)_6]^(3+) 2 [CoF_6]^(3+) 3 [Co(en)_3]^(3+) 4 [Co(NH_3)_6]^(3+)

Identify the correct order of wavelength of light absorbed for the following complex ions. [Co(H_(2)O)_(6)]^(3+)" "," "[Co(CN)_(6)]^(3-)" "," "[Co(I)_(6)]^(3-)" "," "[Co(en)_(3)]^(3+)