Chapter 8

The Periodic Table

Groups, periods, metals and non-metals, and the properties of key groups — with an interactive exercise.

The Periodic Table arranges elements by proton number.

Columns are groups (elements with similar properties) and rows are periods. Metals are on the left; non-metals on the right. Group 1 are the reactive alkali metals; Group 0 (8) are the unreactive noble gases.

Remember

  • Groups = columns · Periods = rows.
  • Group 1 = alkali metals · Group 0 = noble gases.

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