1.1.8

Isotopes

Test yourself

Isotopes

Every atom of the same element will contain an identical number of protons (the same atomic number). But atoms of the same element can have different numbers of neutrons: these atoms are known as isotopes. Hydrogen has 3 isotopes:

Illustrative background for ProtiumIllustrative background for Protium ?? "content

Protium

  • Protium is a hydrogen atom with 1 proton and 0 neutrons.
  • 99.98% of hydrogen atoms are protium.
  • It is used in hydrogen fuel cells and the production of plastics.
Illustrative background for DeuteriumIllustrative background for Deuterium ?? "content

Deuterium

  • Deuterium is a hydrogen atom with 1 proton and 1 neutron.
  • Around 0.02% of hydrogen atoms are deuterium.
  • It is used in nuclear fusion.
Illustrative background for TritiumIllustrative background for Tritium ?? "content

Tritium

  • Tritium is a hydrogen atom with 1 proton and 2 neutrons.
  • It is very rare.
  • It is used in thermonuclear fusion weapons.

Jump to other topics

1Atomic Structure

2Chemical Bonding

3Quantitative Chemistry

4Chemical Changes

5Energy Changes

6The Rate & Extent of Chemical Change

7Organic Chemistry

8Chemical Analysis

9Chemistry of the Atmosphere

10Using Resources

Go student ad image

Unlock your full potential with GoStudent tutoring

  • Affordable 1:1 tutoring from the comfort of your home

  • Tutors are matched to your specific learning needs

  • 30+ school subjects covered

Book a free trial lesson