Atomic number of Mn, Fe, Co and Ni are 25, 26 27 and 28 respectively.

Which of the following outer orbital octahedral complexes have same number of unpaired electrons?



[MnCl6]3–


Mn3+(3d4)



[CoF6]3–


Co3+ (3d6)



Both Co3+ and Mn3+ have the same number of unpaired electrons=4


Thus, Options A & C are the correct answers.

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