The compounds [Co(SO4)(NH3)5]Br and [Co(SO4)(NH3)5]Cl represent
(a) linkage isomerism
(b) ionisation isomerism
(c) coordination isomerism
(d) no isomarism
Answer: (d). No isomerism.
The compounds having the same molecular formula but the different structural formula is known as isomers. [Co(SO4)(NH3)5]Br and [Co(SO4)(NH3)5]Cl have not same molecular formula. Hence, they are not isomers.