Multiple choice general knowledge science & technology

Tritium is an isotope of:

  1. Hydrogen

  2. Helium

  3. Uranium

  4. Radium

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tritium is a radioactive isotope of hydrogen with one proton and two neutrons, making it hydrogen-3. It is used in glow-in-the-dark watch faces and as a tracer in scientific experiments. The other options are elements that have their own distinct isotopes but tritium specifically refers to hydrogen.