Question

Among the following series of transition metal ions, the one where all metal ion have $3 d ^{2}$ electronic configuration is
(At. wt $Ti =22,\, V =23,\, Cr =24,\, Mn =25$)

• A. $Ti ^{3+}, V ^{2+}, Cr ^{3+}, Mn ^{4+}$
• B. $Ti ^{+}, V ^{4+}, Cr ^{6+}, Mn ^{7+}$
• C. $Ti ^{4+}, V ^{3+}, Cr ^{2+}, Mn ^{3+}$
• D. $Ti ^{2+}, V ^{3+}, Cr ^{4+}, Mn ^{5+}$

Answer 1

Answer: (D)

$Ti ^{2+}, V ^{3+}, Cr ^{4+}$ and $Mn ^{5+}$ show $1 s ^{2} 2 s ^{2} 2 p ^{6} 3 s ^{2} 3 p ^{6} 4 s ^{0} 3 d ^{2}$ electronic configuration.