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the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.

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What does atomic mass represent of an element represent?

Atomic Mass represents the mass of atom. We use mass of protons and neutrons.


Why does not an atom of an element represent the actual mass of its atom?

An atom of an element does not represent the actual mass of its atom because the atomic mass listed on the periodic table is an average mass calculated based on the relative abundance of different isotopes of the element. Isotopes are atoms of the same element with differing numbers of neutrons, so the actual mass of an atom of a specific isotope may vary slightly from the average atomic mass.


What does the number above the symbol represent?

The atomic number.


Do subscripts represent the relative mass of each type of atom in the compound?

No, subscripts in a chemical formula represent the number of atoms of each element in the compound. The relative mass of each atom is accounted for by the atomic mass of the element found in the periodic table. So, atomic mass, not subscripts, gives you the relative mass of each type of atom in a compound.


Does an atom of aluminum and an atom of gallium have the same atomic mass?

No, an atom of aluminum and an atom of gallium do not have the same atomic mass. Aluminum has an atomic mass of approximately 26.98 atomic mass units, while gallium has an atomic mass of approximately 69.72 atomic mass units.


What does the atomic mass of the element represent?

the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.


How do you determine the atom the atomic mass of an atom?

Proton + Nuetron = Atomic Mass


What is the atomic mass of an atom?

The atomic mass of an atom is the combined mass of the protons and neutrons in the nucleus.


The mass of an atom usually expressed in atomic mass units is its?

Atomic mass


What is the number of neutrons in an atom affects the atomic what?

The number of neutrons in an atom can affect the atomic mass of an atom.


The relative atomic mass of an atom can be found by comparing the mass of the atom to the mass of?

The Hydrogen atom. Beware, Hydrogen has an atomic mass based on one proton, as it doesn't have a neutron. So Helium has a mass of four times Hydrogen.


The atomic mass of an atom is the?

The atomic mass of an atom is the mass of 6.011 X 10^23 atoms of that element.