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?
A: [MnCl6]3-
B: [FeF6]3-
C: [CoF6]3-
D: [Ni(NH3)6]2+
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?
A: [MnCl6]3-
B: [FeF6]3-
C: [CoF6]3-
D: [Ni(NH3)6]2+
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1 Answer
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This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: A and C
The outer octahedral complexes are weak ligands, number of pairing electrons and high spinning potential.
[MnCl6]3- - electronic configuration of Mn = 3d5,4s2. Shifting the valence electrons become
Mn3+ ,3d4 and number of unpaired electrons is 4.
[FeF6]3- - electronic configuration of Fe = 3d6,4s2. Shifting the valence electrons become
Fe3+ ,3d5 and the number of unpaired electrons is 5.
[CoF6]3 - electronic configuration of Co = 3d7,4s2 shifting the valence electrons become
Fe3+ ,3d6
...more
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