More Isotopes
Physics: Cambridge International GCSE Supplement, topic 5.1.7
Isotopes
Two atoms with the same number of protons but a different number of neutrons are said to be isotopes.

Isotopes
- Isotopes are forms of an element that have the same number of protons, but a different number of neutrons.

Nuclides
- A nuclide is a type of isotope.
- A nuclide refers to a specific nucleus that contains a certain number of protons and neutrons.
- A carbon nuclide with 6 protons and 6 neutrons is different to a carbon nuclide with 6 protons and 7 neutrons. However, both are isotopes of carbon.
Test yourself on More Isotopes
Which of these are true of atoms?
What is the defining feature of isotopes of the same element?