Question

The experimental magnetic moment (3.4 BM) of a hydrated salt of $Eu^{3+}$ at 300 K is significantly different from calculated value. The difference is due to (Given atomic number of $E_u$ = 63)

• A. Population of electrons at higher J level(s) via thermal excitation
• B. Strong ligand field splitting of f-orbitals
• C. Large spin-orbit coupling constant
• D. Pairing of electrons in f-orbitals

Answer 1

Answer: (A)

Population of electrons at higher J level(s) via thermal excitation

Answer 2

The correct answer is (A) :Population of electrons at higher J level(s) via thermal excitation