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Question:

In Wilkinson's catalyst, the hybridization of the central metal ion and its shape are respectively:

sp3dtrigonal bipyramidal

dsp2, square planar

d2sp3, octahedral

sp3, tetrahedral

Solution:

Wilkinson's catalyst is RhCl(PPh3)3 (Ph = phenyl). It has square planar geometry with dsp2 hybridization. Hence, option B is correct.