The known weighted-average
mass of all the naturally occurring* isotopes for an element is the atomic mass of the element.
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*This is not the same as "all the known isotopes", becausemost elements have known isotopes that are not naturally occurring.
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.
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.
The weighted-average mass of all the known isotopes for an element is called the atomic weight or atomic mass. It is calculated by taking into account the abundance of each isotope and its mass to determine the average mass of all isotopes present in nature for that element.
The answer is the atomic weight of the original element: It's the number on the top left of each element square of the Periodic Table.
isotopes
isotopes of the same element have different mass number
Isotopes. They differ in the number of neutrons in the nucleus.
the average mass numbers of the isotopes of an element
The atomic mass of an element is the average of its isotopes, weighted by abundance in nature.
The atomic mass of an element is the average of its isotopes, weighted by abundance in nature.
Isotopes of the same element have different numbers of neutrons and mass.