AQA GCSE Combined Science: Synergy · 8465

Isotopes

What you need to know

Define the mass number as the total sum of protons and neutrons in an atomic nucleus.
Explain that isotopes are atoms of the same element that possess varying numbers of neutrons, resulting in differing nuclear masses.
Interpret conventional nuclear symbols and representations to deduce the identity, mass, and charge of an isotope.
Calculate the precise numbers of protons, neutrons, and electrons in given atoms and ions using provided atomic and mass numbers.