Explanation
[Pt(NH3)3(NO3)]Cl and [Pt(NH3)3Cl]Br shows same type of isomerism. i.e., Ionization isomerism. This is due to difference in ionisable groups.
i.e., i) [Pt(NH3)3(NO3)]Cl and [Pt(NH3)3Cl]NO3
ii) [Pt(NH3)3Cl]Br and [Pt(NH3)3Br]Cl.
The formula is [Co(NH3)5(NO2)]Cl2.
In acidic solution, NH3 forms a bond with H+ to give NH+4 ion which doesnot have a lone pair on N to act a ligand.
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