Which compound is zero valent metal complex [KCET 2005]

1.	Which compound is zero valent metal complex [KCET 2005]
A.	\[[Cu{{(N{{H}_{3}})}_{4}}]S{{O}_{4}}\]
B.	\[[Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]\]
C.	\[[Ni{{(CO)}_{4}}]\]
D.	\[{{K}_{3}}[Fe{{(CN)}_{6}}]\]
Answer» D. \[{{K}_{3}}[Fe{{(CN)}_{6}}]\]

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Which compound is zero valent metal complex [KCET 2005]

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