Coordination CompoundHard

Question

Which of the following statements is correct ?

Options

A.A Werner postulated the use of two types of linkage (primary and secondary) by a metal atom / ion in a    coordination compound.
B.Wilkinson catalyst is used for the hydrogenation of alkenes .
C.Metal carbonyls possess both σ and π bonds.
D.All of these .

Solution

All of these.(A) Primary and secondary valencies.
(B) [RhCl(PPh3)3], Wilkinson catalyst used as homogeneous catalyst for hydrogenation.
(C) M CO which is called as synergic interaction.

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