Which of the following statements is correct?

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A Werner postulated the use of two types of linkage (primary and secondary) by a metal atom / ion in a coordination compound.

Wilkinson catalyst is used for the hydrogenation of alkenes.

Metal carbonyl possess both $π$ and $σ$ bonds.

All of these.

answer is D.

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Detailed Solution

Use of Werner postulated are of two types of linkage (primary and secondary) by a metal atom or the ion in a coordination compound.

Metal-carbon bonds in metal carbonyls posses both `sigma and pi` character. It is because synergic, bonding metal-carbon bond becomes weak.

Wilkinson catalyst (Chloridotris (triphenylphosphane) rhodium(I)) is used for the hydrogenation of alkenes.

Thus, all are correct.

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