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InterviewSolution
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59. Consider the following ions:(Atomic number Cr 24, Fe 26, Co 27 and Ni-28)The correct sequence of increasing number of unpaired electrons in these ions is4'12.3,4B) 4, 2,3,1C) 1,3, 2, 4D) 3, 4,2, |
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Answer» 1.Nickel have 1 unpaired electrons.it is 3d6 we need to fill 8 electrons in 5d orbital.5 electrons are filled and remaining 3 forming 3 pairs.2.cobalt have 2 unpaired electron.3.cr2+ has 4 unpaired electrons.4.Fe3+ has 5 unpaired electrons. option a is correct. |
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