A) The octahedral complex becomes square planar.
B) A tetrahedral complex is formed.
C) Distorted octahedral structure is obtained.
D) Dehydration results in the formation of polymeric species.
Correct Answer: B
Solution :
Hydrated \[CoC{{l}_{2}}.6{{H}_{2}}O\]. is pink coloured and contains octahedral \[{{[Co{{({{H}_{2}}O)}_{6}}]}^{2+}}\] ions. If this is partially dehydrated by heating, then blue coloured tetrahedral ions \[{{[Co{{({{H}_{2}}O)}_{4}}]}^{2+}}\]are formed.
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