1.

An aqueous pink solution of cobalt(II) chloride changes to deep blue on addition of excess of HCI. This is because …………… .

Answer»

`[Co(H_(2)O)_(6)]^(2+)` is TRANSFORMED into `[CoCl_(6)]^(4-)`
`[Co(H_(2)O)_(6)]^(2+)` is transformed into `[CoCl_(4)]^(2-)`
tetrahedral complexes have samaller crystal field splitting than OCTAHEDRAL complexes
tetrahedral complexes have LARGER cystal field splitting than octahedral complex.

Answer :B::C


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