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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
The ionisation energy of nitrogen is more than that of oxygen because :-
  • ✓
    Nitrogen has half filled $p$ -orbitals
  • B
    Nitrogen is left to the oxygen in the same period of the periodic table
  • C
    Nitrogen contains less number of electrons
  • D
    Nitrogen is less electronegative
✓

Answer

Correct option: A.
Nitrogen has half filled $p$ -orbitals
a
lonization energy of nitrogen is more because it has half-filled p-orbital which is stable configuration. So more energy is required to remove an electron from half-filled p-orbital.

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