NEET2013Chemistry-Periodic Table
NEET 2013 Chemistry Electronic Configuration MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The outer electronic configuration of Gd: (At. No. 64):
A
4f⁷ 5d¹ 6s²
B
4f⁷ 5d² 6s²
C
4f⁸ 5d⁰ 6s²
D
4f⁷ 5d⁰ 6s¹
Correct Answer
Option A
Detailed Explanation
Gadolinium (Gd) has an atomic number of 64 and its electron configuration ends in 4f⁷ 5d¹ 6s², following Hund's rule for maximum multiplicity.
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