In which of the following complexes oxidation state of metal is zero [

1.	In which of the following complexes oxidation state of metal is zero [MP PET 1997]
A.	\[\left[ Pt{{\left( N{{H}_{3}} \right)}_{2}}C{{l}_{2}} \right]\]
B.	\[\left[ Cr{{\left( CO \right)}_{6}} \right]\]
C.	\[\left[ Cr{{\left( N{{H}_{3}} \right)}_{3}}C{{l}_{3}} \right]\]
D.	\[\left[ Cr{{\left( en \right)}_{2}}C{{l}_{2}} \right]\]
Answer» C. \[\left[ Cr{{\left( N{{H}_{3}} \right)}_{3}}C{{l}_{3}} \right]\]

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