Two or more chemicals with the same chemical formula, but different nuclear states are known as:

The term that describes two or more chemicals with the same chemical formula but different nuclear states is "isotopes." Isotopes refer specifically to atoms of the same element that have the same number of protons but different numbers of neutrons. This results in different atomic masses, while the chemical properties of the isotopes remain largely unchanged due to the equivalence in the number of protons (which defines the element and its chemical behavior).

The unique characteristic of isotopes allows them to be significant in various fields, including nuclear medicine and radiotherapy, where certain isotopes can be used for diagnostic or therapeutic purposes based on their radioactivity and decay properties. Understanding isotopes is crucial in fields that require a grasp of radioactivity and nuclear reactions.