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JEE Main202331 Jan 2023Morning ShiftChemistryd and f Block ElementsActual

Nd 2 + = _ _ _ _ _ _

Options

  1. A4 f 2 6 s 2
  2. B4 f 4
  3. C4 f 3
  4. D4 f 4 6 s 2

Correct answer

B. 4 f 4

Step-by-step solution

The atomic number of Neodymium (Nd) is 60. Its electronic configuration is Xe   4 f 4   6 s 2 . Now, by removing two electrons from the outermost shell 6s, Nd 2 + ion is formed. Hence, electronic configuration of Nd 2 + is Xe   4 f 4 .

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