Examples of isotopes are O-16, O-17 and O-18. These isotopes can be used in forensics, but are even more accurate in their ability to tell whether a certain rock originated on Earth, Mars or even an asteroid.

Radioactive isotopes are used in many ways, including medical purposes, tracing, X-rays and equipment sterilization. If not disposed of properly, radioactive isotopes may cause damage to the environment.

Percent abundance describes the prevalence of each of an element's isotopes in nature. The percent abundance of each isotope is used in the calculation of an element's average atomic mass.


All isotopes of the same element share a common number of protons and electrons, though they vary in their relative numbers of neutrons. All isotopes of a given element are chemically identical, and they form bonds with ...

Atoms of the same element that have different masses are called isotopes. Different masses result when there are different numbers of neutrons. All atoms of a particular element have the same number of protons.

The isotopes of an element differ from each other in their mass numbers and the number of neutrons they contain. All of the isotopes of an element, however, contain the same number of protons, which is equal to that elem...

Atoms that have the same atomic number but different atomic masses are called isotopes. The difference in mass arises due to the atoms containing a different number of neutrons for the same number of protons.