Homework Answers
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The answer is Option D (Cr+3 )
Atomic number of Fe: 26 in Fe+3 has 23 electrons 1s2,2s2,2p6, 3s2, 3p6, 3d5 (5 unpaired electrons)
Electronic configuration of Ti: [Ar] 3d2 4s2 Ti+2 configuration is : [Ar] 3d2 (2 unpaired electrons)
Electronic configuration of Mn: [Ar] 3d5 4s2 Mn+5 configuration is [Ar] 4s2(2 unpaired electrons)
Electronic configuration of Cr: [Ar] 3d5 4s1 Cr+3 configuration is [Ar] 3d3 (3 unpaired electrons)
The answer is Option D (Cr+3 )
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