THE PERIODIC TABLE

THE PERIODIC TABLE

1. TABLE OF ALL KNOWN ELEMENTS

2. THERE ARE AROUND 100 ELEMENTS THAT ALMOST ALL MATERIALS ARE MADE OF

3. THE MODERN PERIODIC TABLE SHOWS THE ELEMENTS IN ORDER OF INCREASING ATOMIC NUMBER

4. THE TABLE IS LAID OUT SO THAT ELEMENTS WITH SIMILAR PROPERTIES FORM COLUMNS

5. VERTICAL COLUMNS ARE CALLED GROUPS

6. GROUP 1 ELEMENTS ARE CALLED ALKALI METALS

7. GROUP 7 ELEMENT ARE CALLED HALOGENS

8. GROUP 0 ARE CALLED THE NOBLE GASES

9. THE GROUP TO WHICH AN ELEMENT BELONGS TO CORRESPONDS TO THE NUMBER OF ELECTRONS IT HAS IN ITS OUTER SHELL