Coordination Compounds 2 Question 42

####44. The complex ion which has no ’ $d$ ‘-electrons in the central metal atom is

$(2001,1 M)$

(a) $\left[MnO _4\right]$

(b) $\left[Co\left(NH _3\right) _6\right]^{3+}$

(c) $\left[Fe(CN) _6\right]^{3-}$

(d) $\left[Cr\left(H _2 O\right) _6\right]^{3+}$

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Solution:

  1. In $MnO _4^{-}, Mn^{+7}$ has $3 d^{0}$ configuration.


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