In which of the following compounds transition metal is in oxidation s

1.	In which of the following compounds transition metal is in oxidation state zero [NCERT 1982]
A.	\[[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{2}}\]
B.	\[[Fe{{({{H}_{2}}O)}_{6}}S{{O}_{4}}]\]
C.	\[[Ni{{(CO)}_{4}}]\]
D.	\[[Fe{{({{H}_{2}}O)}_{3}}]{{(OH)}_{2}}\]
Answer» D. \[[Fe{{({{H}_{2}}O)}_{3}}]{{(OH)}_{2}}\]

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In which of the following compounds transition metal is in oxidation state zero [NCERT 1982]

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