IGCSE Chemistry - Atomic Structure

Atoms are made of protons, neutrons & electrons..

The nucleus of an atom contains the protons and neutrons. The electrons orbit around the nucleus in the orbital shell.

• Protons have a positive charge
• Neutrons have a no charge
• Electrons have a negative charge

The number of protons in an atom is called its atomic number.

The number of protons & neutrons together is…