1.

Assertion : CO and CN^(-) are referred as p acid L ligands. Reason : In CO and CN^(-) vacant p type orbitals are present.

Answer»

<P>Both Assertion and Reason are true and Reason is the correct explanation of Assertion
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false

Solution :The ligands having vacant p-type orbitals have a tendency to recieve BACK donated p-electrons, THUS these are called p-acid ligands or p-acceptor ligands, e.g., CO and NO have lone pair as well as porp -orbitals which take part in the formation of p*-bond with CENTRAL metal atom as observed in case of CARBONYLS.


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