But where does the name “Periodic Table” come from? It’s “periodic” because elements have properties that recur in regular intervals as you add protons. The table is written so these elements fall in columns or groups. There are several ways to name groups. For example with names (“Alkali Metals” for example) roman numerals and letters (“IA”) a simple number (“Group 1”) You may see all 3 of these at different times, but the concept is the same: The group belongs together.

But where does the name “Periodic Table” come from?

It’s “periodic” because elements have properties that recur in regular intervals as you add protons. The table is written so these elements fall in columns or groups.

There are several ways to name groups. For example with

  • names (“Alkali Metals” for example)
  • roman numerals and letters (“IA”)
  • a simple number (“Group 1”)

You may see all 3 of these at different times, but the concept is the same: The group belongs together.

Tags: periodic table chemistry science elements