What metal is present in Wilkinson's catalyst,which is used as a homogeneous catalyst for the hydrogenation of alkenes?

Chlorophyll contains

Chlorophyll is a coordination compound of . . . . . . .

The iron salt used in blue prints is

Which of the following compounds contains ionic,covalent,and coordinate covalent bonds?

$CO$ (Carbon monoxide) is a neutral oxide of carbon,but it acts as a very strong field ligand and associates with metals to form complex compounds. These complex compounds are very useful in metallurgical processes. $CO$ is a poisonous gas because: