The same way one finds any mean by adding up many measurements and dividing by the number of measurements. Or in some problems, by using a percent abundance of each atomic mass, though the periodic table deals with this for scientists and displays the average atomic mass below the element.
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The Atomic Mass of lithium is found by adding the mass of its protons and neutrons in its nucleus. It is calculated by taking the weighted average of the isotopes of lithium found in nature, where lithium-6 and lithium-7 are the most abundant isotopes. The atomic mass of lithium is approximately 6.94 atomic mass units.
To find the atomic mass of lithium, you would look at the periodic table and find the atomic number for lithium, which is 3. The atomic mass is typically located directly below the element symbol, which for lithium is around 6.94 grams per mole.
The atomic mass of lithium is approximately 6.94 atomic mass units.
Naturally occurring lithium contains two isotopes. The common one has an atomic mass of 7. About one per cent of the lithium has an atomic mass of 6.The atomic mass of Lithium-Li is 6.941 grams.
Lithium is a meta element. Atomic mass of it is 7.
An isotope of lithium with an atomic mass of ten would have an atomic number of 3, meaning it has 3 protons. To find the number of neutrons, subtract the atomic number from the atomic mass: 10 (atomic mass) - 3 (atomic number) = 7 neutrons. Therefore, an isotope of lithium with an atomic mass of ten would have 7 neutrons.