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Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements1 Mark
MCQ
The horizontal rows in Mendleev's table were called :
  • A
    Groups
  • B
    Rows
  • ✓
    Periods
  • D
    None of the above
✓

Answer

Correct option: C.
Periods
The horizontal rows in Mendleev's table were called periods.
There are seven periods in Mendeleev's periodic table.

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