Which of the following has the maximum number of unpaired electrons ?

Question

Which of the following has the maximum number of unpaired electrons ? (A) Mg2+ (B) Ti3+ (C) V3+ (D) Fe2+

Tardigrade Admin · Accepted Answer

Mg 2+ =1 s2 2 s2 2 p6= no unpaired electron Ti 3+ =1 s2 2 s2 2 p6 3 s2 3 p6 3 d1= one unpaired electron V 3+ =1 s2 2 s2 2 p6 3 s2 3 p6 3 d2= two unpaired electrons Fe 2+ =1 s2 2 s2 2 p6 3 s2 3 p6 3 d6= four unpaired electrons

Q. Which of the following has the maximum number of unpaired electrons ?

$M g^{2 +}$

$T i^{3 +}$

$V^{3 +}$

$F e^{2 +}$

Q. Which of the following has the maximum number of unpaired electrons ?

Mg2+

Ti3+

V3+

Fe2+

Mg2+=1s22s22p6= no unpaired electron Ti3+=1s22s22p63s23p63d1= one unpaired electron V3+=1s22s22p63s23p63d2= two unpaired electrons Fe2+=1s22s22p63s23p63d6= four unpaired electrons

$M g^{2 +}$

$T i^{3 +}$

$V^{3 +}$

$F e^{2 +}$