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AIIMS 2001
Exam
AIIMS
Year
2001
Subject
Chemistry
Chapter
Structure of Atom

AIIMS 2001 · Chemistry · Structure of Atom

The electronic configuration 1 s^2 2 s^2 2 p^5 3 s^1 shows

The electronic configuration 1s22s22p53s11 s^2 2 s^2 2 p^5 3 s^1 shows

Options

  1. Aground state of fluorine atom
  2. Bexcited state of fluorine atom
  3. Cexcited state of neon atom
  4. Dexcited state of ion O2−\mathrm{O}_2^{-}

Correct answer

C. excited state of neon atom

Step-by-step solution

The ground state electronic configuration of neon atom (Z=10)(Z=10) is : 1 s², 2 s², 2 p⁶ Therefore first excited state of Neon will be : 1 s², 2 s², 2 p⁵, 3 s¹
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