1.14 deduce the electronic configurations of the first 20 elements from their positions in the Periodic Table

ELECTRONIC CONFIGURATIONS:

- Elements in the same group have the same number of outer shell electrons.
- Elements in the same period have the same number of shells.
- Only a certain number of electrons on each shell are allowed:
1st Shell = 2
2nd Shell = 8
3rd Shell = 8

- E.g. Boron, 2nd period which means 2 shells, and 3rd group which means last shell has 3 electrons.
- Boron = 2.3