AQA GCSE Combined Science Trilogy · 8464
Specification 5.1.1.4, 5.1.1.5, 5.1.1.7, 5.1.2.1, 5.1.2.2, 5.1.2.3, 6.4.1.2, 6.4.2.2 · Paper 3, Paper 5
The number of protons in the nucleus of an atom of an element.
Revise: Charges of Subatomic ParticlesAn element's atomic number is the number of protons in the nucleus of each of its atoms. It tells you which element an atom belongs to.
- Revise: Size, Mass, and Isotopes
- Revise: Electronic Structure
The number of protons in an atom’s nucleus. In a neutral atom, this also equals the number of electrons.
5 more notes
- Revise: Periodic Table Organization
The number of protons in the nucleus of an atom. It identifies the element and equals the number of electrons in a neutral atom.
- Revise: Development of the Periodic Table
The number of protons in the nucleus of an atom, which identifies its element.
- Revise: Metals and Non-Metals
The number of protons in an atom's nucleus. In a neutral atom, it also equals the number of electrons.
- Revise: Atomic Number, Mass Number and Isotopes
- Revise: Nuclear Equations
The number of protons in a nucleus, written at the bottom left of its symbol. It determines the element.