The chemical elements numbered 89 through 103, falling in the seventh row of the periodic table, between radium and rutherfordium. The actinide series is so named because all its elements have chemical properties similar to those of the first of the series, actinium.

  1. Actinium
  2. Thorium
  3. Protactinium
  4. Uranium
  5. Neptunium
  6. Plutonium
  7. Americium
  8. Curium
  9. Berkelium
  10. Californium
  11. Einsteinium
  12. Fermium
  13. Mendelevium
  14. Nobelium
  15. Lawrencium
