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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
A sudden large jump between the values of second and third ionisation energies of an element would be associated with the electronic configuration
  • A
    $1{s^2},\,2{s^2}{p^6},\,3{s^1}$
  • B
    $1{s^2},\,2{s^2}{p^6},\,3{s^2}{p^1}$
  • C
    $1{s^2},\,2{s^2}{p^6},\,3{s^2}{p^2}$
  • ✓
    $1{s^2},\,2{s^2}{p^6},\,3{s^2}$
✓

Answer

Correct option: D.
$1{s^2},\,2{s^2}{p^6},\,3{s^2}$
d
(d) $1{s^2}2{s^2}{p^6}3{s^2}$- In $III$ transition ${e^ - }$ is to be removed from stable configuration.

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