Coordination CompoundMediumBloom L3
Question
The complex ion which has no d electrons in the central metal atom is (At No. Cr = 24, Mn = 25, Fe = 26 , Co = 27) :
Options
A.[MnO4]¯
B.[Co(NH3)6]3+
C.[Fe(CN)6]3–
D.[Cr(H2O)6]3+
Solution
Sol. In [MnO4]– , oxidation state = x + (–8) = –1
x = +7
Mn+7 = 4s03d0
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