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Chemistry Question on coordination compounds

Among the following options, select the option in which each complex in Set-I shows geometrical isomerism and the two complexes in Set-II are ionization isomers of each other.
[en = H2NCH2CH2NH2]

A

Set-I : [Ni(CO)4] and [PdCl2(PPh3)2]
Set-II : [Co(NH3)5CI]SO4 and [Co(NH3)5(SO4)]Cl

B

Set-I : [Co(en) (NH3)2Cl2] and [PdCl2(PPh3)2]
Set-II : [Co(NH3)6] [Cr(CN)6] and [Cr(NH3)6][Co(CN)6]

C

Set-I : [Co(NH3)3(NO2)3] and [Co(en)2Cl2]
Set-II : [Co(NH3)5CI]SO4 and [Co(NH3)5(SO4)]Cl

D

Set-I : [Cr(NH3)5CI]Cl2 and [Co(en) (NH3)2Cl2]
Set-II : [Cr(H2O)6]Cl3 and [Cr(H2O)5Cl]Cl2H2O

Answer

Set-I : [Co(NH3)3(NO2)3] and [Co(en)2Cl2]
Set-II : [Co(NH3)5CI]SO4 and [Co(NH3)5(SO4)]Cl

Explanation

Solution

The correct option is (C): Set-I : [Co(NH3)3(NO2)3] and [Co(en)2Cl2]
Set-II : [Co(NH3)5CI]SO4 and [Co(NH3)5(SO4)]Cl