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D and F Block Elements question

2025 · 22 Jan · Shift 1 · Q11
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D and F Block Elements question

2025 · 22 Jan · Shift 1 · Q11

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
Lanthanoid ions with 4f74 \mathrm{f}^74f7 configuration are : (A) Eu2+\mathrm{Eu}^{2+}Eu2+(B) Gd3+\mathrm{Gd}^{3+}Gd3+(C) Eu3+\mathrm{Eu}^{3+}Eu3+(D) Tb3+\mathrm{Tb}^{3+}Tb3+(E) Sm2+\mathrm{Sm}^{2+}Sm2+ Choose the correct answer from the options given below :
  1. A
    (B) and (E) only
  2. B
    (B) and (C) only
  3. C
    (A) and (D) only
  4. D
    (A) and (B) only
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