Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: \[CO\] and \[CN\] are referred as n acid ligands. Reason: In \[CO\] and \[CN\] vacant \[\pi \] type orbitals are present.A) If both Assertion: and Reason: are true and the Reason: is the correct explanation of the Assertion:
B) If both Assertion: and Reason: are true but the Reason: is not the correct explanation of the Assertion:
C) If Assertion: is true but Reason: is false
D) If both Assertion: and Reason: are false
Correct Answer: A
Solution :
The ligands having vacant \[5\times {{10}^{-4}}M\]-type orbitals have a tendency to receive back donated \[2.5\times {{10}^{-5}}\] electrons. thus these are called \[8\]-acid ligands or \[3.95\] acceptor ligands, eg, CO and NO have lone pair as well as \[10.05\] or \[2\] orbitals which take part in die formation of \[{{2000}^{o}}C\]-bond with central metal atom as observed in carbonyls.
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