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Type: Multiple-Choice
Category: Periodic Table and Elements
Level: Grade 10
Tags: Periodic Table, arrangement
Author: teachchemistry
Last Modified: 7 years ago

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Periodic Table and Elements Question

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Grade 10 Periodic Table and Elements

What happens to the number of valence electrons going across Period 2 in order of increasing atomic number?
  1. The number of valence electrons increases and decreases across the period.
  2. The number of valence electrons increases.
  3. The number of valence electrons decreases.
  4. The number of valence electrons remains the same.