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

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 3. Classification of elements and periodicity in properties4 Marks
MCQ
Which statement is correct
  • A
    For potassium, the atomic radius $<$ ionic radius; but for bromine, the atomic radius $>$ ionic radius
  • B
    For potassium and bromine both, the atomic radii $>$ ionic radii
  • C
    For potassium and bromine both, the atomic radii $<$ ionic radii
  • ✓
    For potassium, the atomic radius $>$ ionic radius but for bromine, the atomic radius $<$ ionic radius
✓

Answer

Correct option: D.
For potassium, the atomic radius $>$ ionic radius but for bromine, the atomic radius $<$ ionic radius
d
Potassium a metal so it will lose an electron. The ion corresponds to potassium is $K ^{+}$and it will have smaller radius than the atomic radius of potassium. while chlorine is a non-metal so it will accept an electron. The ion correspons to chlorine is $Cl ^{-}$and it will have greater radius than atomic radius of chlorine.

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$\begin{array}{*{20}{c}}
  {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
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