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

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Match the Column $I$ with Column $II$ and select correct answer by given codes.

Column $I$
(Element types)

Column $II$
(Electronic configuration)
$A$. Inert-gas elements $1.\left( {n - 1} \right){d^{1 - 10}}\,n{s^{1 - 2}}$
$B$. Transition elements $2\,. ns^2\,np^6$
$C$. Inner-transition elements $3.\left( {n - 2} \right){f^{1 - 14}}\,\left( {n - 1} \right){s^2}{p^6}{d^{0 - 1}}\,n{s^2}$
  • A
    $A-1;\,B-2,\,C-3$
  • ✓
    $A-2;\,B-1,\,C-3$
  • C
    $A-3;\,B-2,\,C-1$
  • D
    $A-2;\,B-3,\,C-1$
✓

Answer

Correct option: B.
$A-2;\,B-1,\,C-3$
b

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