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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 first ionization energy of boron is less than that of beryllium because
  • A
    Boron has higher nuclear charge
  • B
    Atomic size of boron is more than that of beryllium
  • ✓
    Boron has only one electron in $p$-sub-shell
  • D
    Atomic size of boron is less than that of beryllium
✓

Answer

Correct option: C.
Boron has only one electron in $p$-sub-shell
c
It’s Obvious

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