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An aqueous pink solution of cobalt(II) c...

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

A

`[Co(H_(2)O)_(6)]^(2+)` is transformed into `[CoCl_(6)]^(4-)`

B

`[Co(H_(2)O)_(6)]^(2+)` is transformed into `[CoCl_(4)]^(2-)`

C

tetrahedral complexes have smaller crystal field splitting than octahedral complexes.

D

tetrahedral complexes have larger. Crystal field splitting than octahedral complexes.

Text Solution

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The correct Answer is:
B, C
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