Question
Electronic configuration of the outer shell of the element Gd with atomic number 64 is
Options :
4f4 5d⁵ 6s¹
4f³ 5d⁵ 6s²
4f⁵ 5d⁴ 6s¹
4f⁷ 5d¹ 6s²
Answer :
4f⁷ 5d¹ 6s²
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