Which of the following has the highest number of unpaired electrons?
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a
P(Z = 15)
b
Fe(Z = 26)
c
Zn(Z = 30)
d
Cr(Z =24)
answer is D.
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Detailed Solution
P(Z = 15) has 3p3, three unpaired electrons Fe(Z = 26) has 3d6, four unpaired electrons.Zn(Z = 30) has no unpaired electrons.Cr(Z = 24) has 3d5 4s1, six unpaired electrons.