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the Atomic Mass is on some periodic tables and is the decimal. for example... for carbon the atomic mass is 12.01 on my periodic table that i am looking at

go to this website. http:/www.ptable.com. it should have a Periodic Table and the atomic mass is on the very bottom of each box. for example the atomic mass for bromine is 79.904

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9y ago
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11y ago

Atomic mass = Mass of protons + Mass of neutrons

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4y ago

atomic mass = number of protons + electrons

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Q: How do you find atomic mass in an atom?
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How do you you find the mass number of an atom?

To find the mass number of an atom, you add together the number of protons and neutrons in the nucleus of the atom. The atomic mass listed in the periodic table is the weighted average of the mass numbers of all isotopes of that element.


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.


How do you find the number of nutrons in an atom?

To find the number of neutrons in an atom, subtract the atomic number (number of protons) from the atomic mass (rounded mass number). Neutrons are neutral particles found in the nucleus of an atom along with protons.


What is the relationship btw atomic mass and atomic mass number?

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.


What is the atomic mass of an element the number?

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.


What is used to find the mass of an atom?

The mass of an atom is obtained dividing the atomic weight of an isotope by the Avogadro number.


Subtracting the Atomic number from the atomic mass?

To find the number of neutrons in an atom, you would subtract the atomic number (number of protons) from the atomic mass (sum of protons and neutrons). The difference between the atomic mass and the atomic number gives you the number of neutrons in the atom.


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

Proton + Nuetron = Atomic Mass


What is the difference between the atomic number mass number and atomic mass?

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.


What is the difference between the atomic number and average atomic mass?

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.


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.


Why do you subtract the atomic number from the mass number?

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.