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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
Atomic radii of fluorine and neon in angstrom units are respectively given by
  • ✓
    $0.762, 1.60$
  • B
    $1.60, 1.60$
  • C
    $0.72, 0.72$
  • D
    None of these values
✓

Answer

Correct option: A.
$0.762, 1.60$
a
The radius of flourine is measured using covalent radius whereas that of neon is measured using Van der Waal's radius. It is known that the Van der Waal's radius is greater than the covalent radius. Hence, flourine is smaller than neon.

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