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JEE Main202229 Jun 2022Morning ShiftChemistryStructure of AtomActual

The electronic configuration of Pt (atomic number 78 ) is

Options

  1. AKr 4 f 14 5 d 10
  2. BXe 4 f 14 5 d 10
  3. CXe 4 f 14 5 d 8 6 s 2
  4. D[ Xe ] 4 f 14 5 d 9 6 s 1

Correct answer

D. [ Xe ] 4 f 14 5 d 9 6 s 1

Step-by-step solution

The atomic number of Platinum is 78 . Platinum belongs Nickel group, and it is 5d series element. Electronic configuration of Platinum is 1 s 2 2 s 2 p 6 3 s 2 p 6 d 10 4 s 2 p 6 d 10 f 14 5 s 2 p 6 d 9 6 s 1 Pt 78 = Xe 4 f 14 5 d 9 6 s 1 (Exceptional electronic configuration)

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