Periodic Trends Practice

Instructions

  1. Compare the two highlighted elements for atomic radius, electronegativity, or first ionization energy.
  2. Choose an answer and use Hint when you need help. Review the feedback before moving on.
  3. Finish a mixed round for a completion code, or use Practice options to work on one trend.

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Main groups only. Both elements in the question are marked.

Practice options

Start a fresh round of all three trends or practice one trend. Starting again clears this round.

About this activity

Compare pairs of elements by atomic radius, electronegativity and first ionization energy. Explain each answer with the trend across a period or down a group.

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