Sodium chemical element, vector illustration diagram. Atomic mass and electron configuration information. Symbol Na in periodic table. Educational chemistry scheme and detailed structure example.

This electron arrangement can be written as 2.8.1 (each dot separates one shell from the next). This electron arrangement can also be shown as a diagram. In these diagrams: ...

Revise OCR GCSE Chemistry topics including non-metals and ionic compound properties with this BBC Bitesize GCSE Chemistry (OCR 21C) study guide.