The correct statements about metal carbonyls are A. The metal-carbon bonds in metal carbonyls possess both and -character. B. Due to synergic bonding interactions between metal and CO ligand, the metal-carbon bond becomes weak. C. The metal-carbon bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant orbital of metal. D. The metal-carbon bond is formed by the donation of electr

Step-by-step solution

Statement A is correct. The metal-carbon bond in metal carbonyls possesses both and character due to synergic bonding. Statement B is incorrect. The synergic bonding interaction between the metal and the CO ligand strengthens the metal-carbon bond. Statement C is correct. The metal-carbon bond is formed by the donation of a lone pair of electrons from the carbonyl carbon into a vacant orbital of the metal. Statement D is correct. The metal-carbon bond is formed by the back-donation of electrons from a filled d-orbi