Atomic mass is the mass of an atom, usually expressed in atomic mass units (amu). It is a measure of the total mass of the protons and neutrons in the nucleus of an atom. The atomic mass of an element is typically reported on the periodic table of the elements and is usually rounded to the nearest whole number.
For example, the atomic mass of carbon is 12.01 amu, which means that an atom of carbon has a mass of about 12.01 atomic mass units. The atomic mass of hydrogen is 1.01 amu, which means that an atom of hydrogen has a mass of about 1.01 atomic mass units. The atomic mass of oxygen is 16.00 amu, which means that an atom of oxygen has a mass of about 16.00 atomic mass units.
Here are some more examples of atomic masses:
The atomic mass of iron is 55.85 amu.
The atomic mass of aluminum is 26.98 amu.
The atomic mass of gold is 197.0 amu.
The atomic mass of chlorine is 35.45 amu.
The atomic mass of iodine is 126.9 amu.
The atomic mass of neon is 20.18 amu.
The atomic mass of platinum is 195.09 amu.
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