It allows for the relative abundances of different isotopes.
Isotopes: atoms with the same atomic number (also identical number of protons and electrons) but with a different number of neutrons and consequently with a different atomic mass.An isotope is an atom; the atom has not isotopes but an element has isotopes (natural or artificial).
The isotopes of an element must have a different amount of neutrons. I'm pretty sure you know what these are, but just in case: A neutron is a sub-atomic part of an atom, together with protons and electrons.
Isotopes of elements have different atomic mass'.
hitorilons and magnydons I think you are taking about isotopes.
Atomsof the same element that have different atomic massesare isotopes of one another.
No. By definition isotopes of an element have the same number of protons (that is what makes them uranium, for example) but different numbers of neutrons (neutral particules in the nucleus which provide mass).
The atomic weight is taken as the average weight or mass of the different isotopes of the Same atom That exists in the different %age in our enviromenT
Isotopes are caused by variations in the number of neutrons in an atom's nucleus. Neutrons are subatomic particles that do not carry an electric charge and contribute to an atom's mass. The different number of neutrons in isotopes result in variations in atomic mass.
Isotopes of an atom have the same number of protons but different numbers of neutrons. This causes isotopes to have different atomic masses. The chemical properties of isotopes are usually identical, but physical properties such as nuclear stability and radioactive decay can vary.
We can find atomic mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
Since you have isotopes of elements. Isotopes are elements with different number of neutrons hence why the different atomic masses for the same elements.