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Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties1 Mark
MCQ
Identify the electronic configuration of an element whose atomic radii is determined by taking half the internuclear distance between like atoms.
  • ✓
    $\ce{[He]2s^22p5}$
  • B
    $\ce{[Ar]4s^2}$
  • C
    $\ce{[Ne]3s^2}$
  • D
    $\ce{[Kr]4d^55s^2}$
✓

Answer

Correct option: A.
$\ce{[He]2s^22p5}$
The atomic radii of non $-$ metallic elements are determined by taking half the internuclear distance between like atoms.
The only non $-$ metal in the given options is option $A,$ which is Flourine.

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