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Yes; isotopes of the same element have the same atomic number but differ in their atomic masses.
The atomic number is the same for the all isotopes of a chemical element.
The atomic number is the same for the isotopes of a chemical element.
Atoms of the same element with different atomic masses are known as isotopes. Isotopes differ only by the number of neutrons present in the nucleus of the isotopes. The number of protons is the same for all isotopes of an element (because if there were different numbers of protons, then the atoms would not be of the same element).
Isotopes of the same element have the same number of protons (atomic number) but differ in number of neutrons (hence atomic masses).
atomic masses
Different numbers of neutrons and hence different physical properties.
Well all Isotopes have the same atomic number so if you have the element the atomic number of an element with that same isotope is that same atomic number.
Not a question of why. It just is, isotopes have the same atomic number, (which means that they are all the same element) with different neutron numbers.
The known weighted-averagemass of all the naturally occurring* isotopes for an element is the atomic mass of the element.____________________*This is not the same as "all the known isotopes", becausemost elements have known isotopes that are not naturally occurring.
Isotopes
isotopes