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Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements1 Mark
MCQ
Elements in a period have same :
  • A
    Number of valence electrons
  • B
    Valency
  • ✓
    Number of shells
  • D
    Volume
✓

Answer

Correct option: C.
Number of shells
Elements present in horizontal rows are called periods.
Elements belonging to the same period have same no. of the shell as the electrons are added in the same shell of the element.

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