Example with the istope 235 of uranium:
- 235
92U (recommended) or
- U-235
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Sodium-23 and Sodium-22 are two isotopes of sodium. Na-23 is the only stable isotope of Sodium. Na-22 is one of the two isomers (the other of which is Na-24).
Isotopes are atoms of the same elements with different number of neutrons.
elements are isotopes, when different atoms of the same element have different number of neutrons
Isotopes of elements are atoms with the same number of protons but different numbers of neutrons. This causes isotopes of the same element to have different atomic masses. Isotopes can be stable or unstable, with unstable isotopes undergoing radioactive decay.
The atomic number of the isotopes of an element is identical; the mass number is different.