Which of the following is wrong statement [BHU 2003]

1.	Which of the following is wrong statement [BHU 2003]
A.	\[Ni{{(CO)}_{4}}\] has oxidation number + 4 for Ni
B.	\[Ni{{(CO)}_{4}}\] has zero oxidation number for Ni
C.	Ni is metal
D.	CO is gas
Answer» B. \[Ni{{(CO)}_{4}}\] has zero oxidation number for Ni

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Which of the following is wrong statement [BHU 2003]

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