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

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties1 Mark
MCQ
Mendeleev classified elements in:
  • A
    Increasing order of atomic groups.
  • B
    Seven periods and eight groups.
  • C
    Seven periods and nine groups
  • D
    Eight periods and seven groups.
✓

Answer

  1. Seven periods and eight groups.

Explanation:

Mendeleev kept elements in increasing order of atomic weights in seven periods and eight groups.

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