Problem: Based on electronic configurations, which of these has the smallest number of unpaired electrons?a) Crb) Fec) Nid) Mn

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We are being asked which has the smallest number of unpaired electrons


To find the number of unpaired electrons recall. 


s              _                 1 orbital          maximum of 2 electrons

p           _ _ _              3 orbitals          maximum of 6 electrons

d          _ _ _ _ _         5 orbitals        maximum of 10 electrons

f        _ _ _ _ _ _ _      6 orbitals        maximum of 14 electrons



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Problem Details

Based on electronic configurations, which of these has the smallest number of unpaired electrons?

a) Cr

b) Fe

c) Ni

d) Mn

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