Lanthanoid ions with 4 f^7 configuration are: (A) Eu^2+ (B) Gd^3+ (C) Eu^3+ (D) Tb^3+ (E) Sm^2+ Choose the correct answer from the options given below:

Lanthanoid ions with 4 f^7 configuration are: Eu^2+ Gd^3+ Eu^3+ Tb^3+ (E) Sm^2+ Choose…

Chemistry · 2025

JEE Main · 22 January 2025, Shift 1 · Q60

Lanthanoid ions with $\displaystyle 4 \mathrm{f}^7$ configuration are :

(A)

$\displaystyle \mathrm{Eu}^{2+}$

(B)

$\displaystyle \mathrm{Gd}^{3+}$

(C)

$\displaystyle \mathrm{Eu}^{3+}$

(D)

$\displaystyle \mathrm{Tb}^{3+}$

(E)

$\displaystyle \mathrm{Sm}^{2+}$

Choose the correct answer from the options given below :