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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
Which of the following pairs show reverse properties on moving along a period from left to right and from top to down in a group
  • A
    Nuclear charge and electron affinity
  • B
    Ionisation energy and electron affinity
  • ✓
    Atomic radius and electron affinity
  • D
    None of these
✓

Answer

Correct option: C.
Atomic radius and electron affinity
c
(c) Atomic radius increase from top to bottom in a group while decrease from left to right in a period on the other hand electron affinity shows severe trends i.e. decrease from top to bottom in a group and increase from left to right in a period.

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