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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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9y ago

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The particle that determines the mass of the atom is what?

Protons, neutrons and electrons


What particle determines the mass along with the protons of an atom?

Neutrons are the particles that contribute to the mass of an atom, along with protons. Neutrons have a similar mass to protons, but they do not have a charge. The number of protons and neutrons in an atom's nucleus determines its atomic mass.


What is the particle that determines the mass of an atom is called what?

Protons, neutrons and electrons


What particle determines the name of the atom?

nuclei


Which in an atom has the least mass in an atom?

Which particle? The electron.


What particle has 26 electrons 29 neutrons and 26 protrons?

The particle you are describing is an atom of iron. The number of protons in an atom determines its atomic number, which is 26 for iron. The sum of protons and neutrons gives the atomic mass number, which is 56 for this iron atom.


Which subatomic particle determines the charge on a nucleus of an atom?

The proton.


What subatomic particle number determines the identity of an element?

The number of protons, which is the atomic number of an element, determines the identity of an element.


What subatomic particle determines whether an atom exists as an isotope?

neutron


Which particle of an atom has the less mass?

The Electron.


A postively charged particle in an atom?

A positively charged particle in an atom is the proton. Protons are found in the nucleus of the atom along with neutrons, and they carry a positive charge equal in magnitude to the negative charge of the electron. The number of protons in the nucleus determines the atomic number of an element.


What sub atomic particle does not particitpate in the calculation of mass of atom?

Mass of electron is not included for the calculation of mass of an atom.