Which of the following is not true for metal carbonyls [MP PET 1993]

1.	Which of the following is not true for metal carbonyls [MP PET 1993]
A.	The oxidation state of the metal in the carbonyls is zero
B.	The secondary carbonyls are obtained from photo-decomposition
C.	Metal carbonyls are single bonded species
D.	\[d\pi -p\pi \] overlap is observed in metal carbonyls
Answer» E.

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Which of the following is not true for metal carbonyls [MP PET 1993]

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