How many families are on the Periodic Table?

There are nine:

Alkali Metals Metalloids

Non-Metals Rare Earth Elements Halogens Noble Gases Alkaline Earth Elements Transition Metals Other Metals

The traditional periodic table has 18 families, also known as groups.

  1. Alkali Metals
  2. Metalloids
  3. Non-Metals
  4. Rare Earth Elements
  5. Halogens
  6. Noble Gases
  7. Alkaline Earth Elements
  8. Transition Metals
  9. Other Metals