Which one has the highest paramagnetism [AMU 2001]

1.	Which one has the highest paramagnetism [AMU 2001]
A.	\[Ni{{(CO)}_{4}}\]
B.	\[[Ni{{(N{{H}_{3}})}_{4}}]C{{l}_{2}}\]
C.	\[[Ni{{(N{{H}_{3}})}_{6}}]C{{l}_{2}}\]
D.	\[[Cu{{(N{{H}_{3}})}_{4}}]C{{l}_{2}}\]
Answer» E.

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Which one has the highest paramagnetism [AMU 2001]

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