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In which complex is the transition metal...

In which complex is the transition metal in zero. oxidation state:

A

`[Fe(H_2O)_3(OH)_3]`

B

`[Ni(CO)_4]`

C

`[Fe(H_2O)_6]SO_4`

D

`[Co(NH)_3]_6CI_3`

Text Solution

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The correct Answer is:
B
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