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Although not all, per se, the proton and neutron in the nucleus of the atom comprise the vast majority of the mass of an atom. The electron, though not massless, contributes a practically negligible mass to the atom by comparison.

The heaviest particle is the neutron. If we assign it a mass of 1.0 mass unit, then the proton is next with a mass of 0.9986 mass units, followed by the lowly electron with a mere 0.0005 mass units.

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Neutrons and Protons, with charges of 0 and 1+ respectivly.

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Protons and Neutrons

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Protons and neutrons.

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netrons

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Q: What 2 particles make up most of the atomic mass?
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Continue Learning about Natural Sciences

What particles make up most of the mass atom?

air,mater


Do electrons make up most of an atom?

Protons and neutrons form the most of the atomic mass.


Average atomic mass is closest to its most?

Average atomic mass is closest to its most commonisotope.


What is the atomic mass in Hindi?

The atomic mass (ma) is the mass of a specific isotope, most often expressed in unified atomic mass units.[1] The atomic mass is the total mass of protons, neutrons and electrons in a single atom.[2]The atomic mass is sometimes incorrectly used as a synonym of relative atomic mass, average atomic mass and atomic weight; these differ subtly from the atomic mass. The atomic mass is defined as the mass of an atom, which can only be one isotope at a time and is not an abundance-weighted average as in the case of atomic weight. In the case of many elements that have one dominant isotope the actual numerical similarity/difference between the atomic mass of the most common isotope and the relative atomic mass or standard atomic weights can be very small such that it does not affect most bulk calculations-but such an error can be critical when considering individual atoms. For elements with more than one common isotope the difference even to the most common atomic mass can be half a mass unit or more (e.g. chlorine). The atomic mass of an uncommon isotope can differ from the relative atomic mass or standard atomic weight by several mass units.


What is carbon 13s' atomic mass?

Carbon-12 is the most common form of Carbon and therefore, counts for most of the atomic mass.

Related questions

Which two subatomic particles make up most of the atoms mass Where are they located?

These particle are neutrons and protons; they are located in the atomic nucleus.


In Bohr's model which particles make up the most mass of the atom?

the electron particles make up the mostr mass


Which sub atomic particle makes up most of the mass of atom?

These particles are proton and neutron.


What particles make up most of the mass atom?

air,mater


Do electrons make up most of an atom?

Protons and neutrons form the most of the atomic mass.


Average atomic mass is closest to its most?

Average atomic mass is closest to its most commonisotope.


Mass of an atom is mainly due to nucleus?

Yes, the atomic weight of the protons and neutrons in an atom (the 2 particles that make up the nucleus) is 1 for each of them. The other particle in an atom is an electron. The atomic weight of an electron is 1/1840 so it is often considered negligible.


What is the atomic mass in Hindi?

The atomic mass (ma) is the mass of a specific isotope, most often expressed in unified atomic mass units.[1] The atomic mass is the total mass of protons, neutrons and electrons in a single atom.[2]The atomic mass is sometimes incorrectly used as a synonym of relative atomic mass, average atomic mass and atomic weight; these differ subtly from the atomic mass. The atomic mass is defined as the mass of an atom, which can only be one isotope at a time and is not an abundance-weighted average as in the case of atomic weight. In the case of many elements that have one dominant isotope the actual numerical similarity/difference between the atomic mass of the most common isotope and the relative atomic mass or standard atomic weights can be very small such that it does not affect most bulk calculations-but such an error can be critical when considering individual atoms. For elements with more than one common isotope the difference even to the most common atomic mass can be half a mass unit or more (e.g. chlorine). The atomic mass of an uncommon isotope can differ from the relative atomic mass or standard atomic weight by several mass units.


What is carbon 13s' atomic mass?

Carbon-12 is the most common form of Carbon and therefore, counts for most of the atomic mass.


Which two particles make up most of the mass of a C-12 atom?

proton and neutron


What particles take up most of the mass of an atom?

Protons and neutrons make up most of the mass of an atom. Electrons weigh almost nothing by comparison.


The atomic mass and atomic number of berkelium?

The most stable isotope of berkelium - 247Bk - has an atomic mass of 247. The atomic number of berkelium is 97.