Question

# In which of the following compounds transition metal has zero oxidation state?

A
CrO5
B
NH2NH2
C
NOClO4
D
[Fe(CO)5]

Solution

## The correct option is C $$\mathrm [Fe(CO) _ { 5 }]$$Solution:$$(1)$$ In option $$B$$ & $$C$$ there is no transition metals so elimimated$$(2)$$ In $$[Fe(CO)_5]$$ carbon monoxide is a natural ligand, therefore no involvement of $$Fe$$ electrons in complex, $$Fe$$ has zero oxidation state.$$\therefore \$$ Option $$D$$ is correct answer.Chemistry

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