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Q.

Which of the following is incorrectly matched?

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a

Complex                          Number of unpaired electrons
MnH2O62+                                     5

b

Complex                          Number of unpaired electrons
Cr(en)32+                                     2

c

Complex                          Number of unpaired electrons
CoNH363+                                     4

d

Complex                          Number of unpaired electrons
FeF63                                     5

answer is C.

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Detailed Solution

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FeF63    5 unpaired electrons. Cr(en)32+    2 unpaired electrons. CoNH363+    0 unpaired electron. MnH2O62+    5 unpaired electrons. 

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