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Manipal MET2017ChemistryClassification of Elements and Periodicity in Properties

The ionisation energy of nitrogen is larger than that of oxygen because

Options

  1. Athe size of nitrogen atom is smaller
  2. Bthere is greater attraction of electrons towards the nucleus
  3. Chalf-filled p-orbitals of nitrogen have extra stability
  4. DNone of the above

Correct answer

C. half-filled p-orbitals of nitrogen have extra stability

Step-by-step solution

The ionisation energy of nitrogen is larger than that of oxygen because half-filled p -orbitals of nitrogen have extra stability while oxygen has 2 p^4 electronic configuration of the outermost shell, hence its electrons can be easily removed.

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