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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
Under normal condition which of the following electronic configuration is able to form dipositive ion
  • A
    $[Ar]\,4{s^1}$
  • B
    $[Ne]\,2{s^2}3{p^6}$
  • ✓
    $[Ne]\,3{s^2}$
  • D
    None of these
✓

Answer

Correct option: C.
$[Ne]\,3{s^2}$
c
$(c)Mg$ has only two electrons in the $3s$-orbital and hence its $I.E.$ is lowest, i.e. it has the maximum tendency to form di-positive ions.

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