ChemistryEasy127×since 2002Q1650The electronic configurations of bivalent europium and trivalent cerium are (atomic number : Xe = 54, Ce = 58, Eu = 63)A[Xe] 4f⁷ 6s² and [Xe] 4f² 6s²B[Xe] 4f² and [Xe] 4f⁷C[Xe] 4f⁴ and [Xe] 4f⁹D[Xe] 4f⁷ and [Xe] 4f¹Check answerSkip