Q. Which of the following has the maximum number of unpaired electrons?
A) $Mg^{2 +}$
B) $Ti^{3 +}$
C) $Fe^{2 +}$
D) $V^{3 +}$
Explanation
(c)
$Mg^{2 +} = \lbrack Ne\rbrack$ [Zero unpaired electrons]
$Ti^{3 +} = \lbrack Ar\rbrack 3d^{1}\$[One unpaired electrons]
$Fe^{2 +} = \lbrack Ar\rbrack 3d^{5}\$[Five unpaired electrons]
$V^{3 +} = \lbrack Ar\rbrack 3d^{2}\$[Two unpaired electrons]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.