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JIPMER 2005
Exam
JIPMER
Year
2005
Subject
Chemistry
Chapter
Coordination Compounds

JIPMER 2005 · Chemistry · Coordination Compounds

Which of the following is wrong statement?

Which of the following is wrong statement?

Options

  1. ANi(CO)4\mathrm{Ni}(\mathrm{CO})_4 has oxidation number +4 for Ni
  2. BNi(CO)4\mathrm{Ni}(\mathrm{CO})_4 has zero oxidation number for Ni
  3. CNi is metal
  4. DCO is gas

Correct answer

A. Ni(CO)4\mathrm{Ni}(\mathrm{CO})_4 has oxidation number +4 for Ni

Step-by-step solution

In Ni(CO)4\mathrm{Ni}(\mathrm{CO})_4, carbonyl group is a neutral species. So oxidation number of Ni is zero. Ni(CO)4x+4×0=0x=0\begin{aligned} \mathrm{Ni}(\mathrm{CO})_4 & \\ x+4 \times 0 & =0 \\ x & =0\end{aligned}
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