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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
Which of the following sequence represents atomic number of only representative  elements?
  • A
    $55, 12, 48, 53$
  • B
    $13, 33, 54, 83$
  • ✓
    $3, 33, 53, 87$
  • D
    $22, 33, 55, 66$
✓

Answer

Correct option: C.
$3, 33, 53, 87$
c
Representative elements are the elements which lie in the group $1$ and $2$ on the far left and the last six columns or groups on the far right corner of the periodic table.

Sequence $C$ option contains only representative elements.

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