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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
In the main group elements $(i)$ as we proceed down the same group in the periodic table and $(ii)$ as we proceed from left to right in the same period, the atomic radius
  • ✓
    $(i)$ Increase continuously; $(ii)$ Decreases continuously
  • B
    $(i)$ Decreases continuously; $(ii)$ Increases continuously
  • C
    $(i)$ Increases continuously; $(ii)$ Decreases upto the group $IV$ and then increases upto the end of the period.
  • D
    $(i)$ Decreases continuously; $(ii)$ Decreases upto the group $IV$ and then increases upto the end of the period.
✓

Answer

Correct option: A.
$(i)$ Increase continuously; $(ii)$ Decreases continuously
a
Down the group atomic radius increases and in a period from left to right atomic radius decreases.

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