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JEE Main202429 Jan 2024Morning ShiftChemistryStructure of AtomActual

The correct set of four quantum numbers for the valence electron of rubidium atom ( Z = 37 ) is:

Options

  1. A5 , 0 , 0 , + 1 2
  2. B5 , 0 , 1 , + 1 2
  3. C5 , 1 , 0 , + 1 2
  4. D5 , 1 , 1 , + 1 2

Correct answer

A. 5 , 0 , 0 , + 1 2

Step-by-step solution

Electronic configuration of Rb = Kr 5 s 1 Rb is alkali metal with valence electron in 5 s subshell. Hence, n = 5 Rb = [ Kr ] 5 s 1 n = 5 l = 0 m = 0 s = + 1 2 or - 1 2 Hence, the answer is option A,

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