Isotopes

From Conservapedia

Isotopes are two or more atoms that have the same number of protons (ie they are from the same element), but different numbers of neutrons.^[1] For example, the most common isotope of hydrogen has a single proton and no neutrons in its nucleus. A very small proportion of hydrogen atoms are of the isotope deuterium (with one proton and one neutron)^[2] or tritium (with one proton and two neutrons)^[3].

References

1. ↑ Wile, Dr. Jay L. Exploring Creation With Physical Science. Apologia Educational Ministries, Inc. 1999, 2000
2. ↑ Deuterium - Purchon.com
3. ↑ Tritium - Physics.isu.edu