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Q.
Which of the following complexes does not show geometrical isomerism?
AMUAMU 2016Coordination Compounds
Solution:
Geometrical isomerism is not possible for the complexes with coordination number $2$ and $3$ and tetrahedral complexes with coordination number $4$ because in this case, all the four positions are equivalent. Thus, amongst them, $[Ni(CO_4)]$ will not show geometrical isomerism.