Periodic trends: Atomic radius

Intros
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Lessons
  1. Principles of electrostatic forces.
  2. Using the principles to explain periodic trends.
  3. Trend in melting point across a period.
Examples
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Lessons
  1. Explain trends in atomic radius down a group.
    Explain the trend in atomic radius observed in group 1 of the Periodic Table.
  2. Explain trends in atomic radius across a period.
    Explain the trend in atomic radius observed going across Period 2 of the Periodic Table.