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Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements2 Marks
Question
Elements of the same group have similar properties. Why?
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Answer

  1. Elements in the same group have similar properties because they have the same number of valence electrons in their outermost shell.
  2. Elements in the same period have different properties because the number of valence electrons in their outermost shells differ.

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