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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
Nitrogen has lower electron affinity than its preceeding element carbon because
  • A
    Electron affinity decreases along a period
  • B
    Electron affinity generally increases along a period
  • ✓
    Nitrogen atom has half filled $p$-orbital
  • D
    Nitrogen is a $p$-block element
✓

Answer

Correct option: C.
Nitrogen atom has half filled $p$-orbital
c
Since $N$ has half-filled $p$-orbital which provides extra stability. So it has lower electron affinity than carbon.

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