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JIPMER 2010
Exam
JIPMER
Year
2010
Subject
Chemistry
Chapter
Structure of Atom

JIPMER 2010 · Chemistry · Structure of Atom

Which of the following configurations corresponds to element of...

Which of the following configurations corresponds to element of highest ionisation energy?

Options

  1. A1s2,2s11 s^2, 2 s^1
  2. B1s2,2s2,2p31 s^2, 2 s^2, 2 p^3
  3. C1s2,2s2,2p21 s^2, 2 s^2, 2 p^2
  4. D1s2,2s2,2p6,3s11 s^2, 2 s^2, 2 p^6, 3 s^1

Correct answer

B. 1s2,2s2,2p31 s^2, 2 s^2, 2 p^3

Step-by-step solution

The ionisation energy of 1s2,2s2,2p31 s^2, 2 s^2, 2 p^3 configuration is highest due to the presence of half-filled (stable) orbitals.
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