An aqueous pink solution of cobalt(II) chloride changes to deep blue on addition of excess of HC1. This is because _________ . [NCERT Exemplar] (a) [Co(H2O)6]2+ is transformed into [CoCl6]4- (b) [Co(H2O)6]2+ is transformed into [CoCl4]2- (c) tetrahedral complexes have smaller crystal field splitting than octahedral complexes. (d) tetrahedral complexes have larger crystal field splitting than octahedral complex.

An aqueous pink solution of cobalt(II) chloride changes to deep blue o

1.	An aqueous pink solution of cobalt(II) chloride changes to deep blue on addition of excess of HC1. This is because _________ . [NCERT Exemplar] (a) [Co(H2O)6]2+ is transformed into [CoCl6]4- (b) [Co(H2O)6]2+ is transformed into [CoCl4]2- (c) tetrahedral complexes have smaller crystal field splitting than octahedral complexes. (d) tetrahedral complexes have larger crystal field splitting than octahedral complex.
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