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

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
The third ionization energy is maximum for
  • A
    Nitrogen
  • B
    Phosphorus
  • C
    Aluminium
  • ✓
    Boron
✓

Answer

Correct option: D.
Boron
d
Boron has highest third ionization energy due to charge density and also after losing $3$ electrons boron attains noble gas configuration. Ionization energy decreases down the group.

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