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

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 3. Classification of elements and periodicity in properties4 Marks
MCQ
Which among the following elements has the highest first ionization enthalpy?
  • ✓
    Nitrogen
  • B
    Boron
  • C
    Carbon
  • D
    Oxygen
✓

Answer

Correct option: A.
Nitrogen
a
Due to stable $2s^2\, 2p^3$ configuration. (half filled $p-$ orbital) Nitrogen atom has highest energy.

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