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The Proton, in regular hyrdogen, and also neutrons in other isotopes like deuterium.

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13y ago
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12y ago

neutrons and protons

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Q: What subatomic particle accounts for the mass of the atom?
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Related questions

What subatomic particle has the less mass?

The electron is the subatomic particle with the least mass. It has a mass of about 1/1836 of a proton or neutron.


What subatomic particle Has the smallest relative mass?

In the atom the electron is the lightest.


Subatomic particle that has the least mass?

In the atom this particle is the electron. Generally in the particle physics: photons, gluons, neutrinos.


What is a subatomic particles with almost no mass?

The electron is the lightest particle in the atom.


Which subatomic particle does not have a very big effect on the mass of the whole atom?

The electron.


What subatomic particle or particles contributes the most to the mass of the atom?

These particles are protons and neutrons.


Why ins't the third subatomic particle counted in the mass of an atom?

Electrons have a mass of only about 0.0005 as much as protons or neutrons.


What is the lightest subatomic particle of an atom?

The lightest subatomic particle of an atom is the electron. It has a very small mass compared to protons and neutrons, making it a key component in determining the chemical properties of an atom.


Which of the subatomic particle is the lightest?

Electron, lightest stable subatomic particle known. It carries a negative charge, which is considered the basic unit of electric charge. The rest mass of the electron is 9.109 × 10−31 kg, which is only 1/1,840the mass of a proton. An electron is therefore considered nearly massless in comparison with a proton or a neutron, and the electron mass is not included in calculating the mass number of an atom.


What is the subatomic particle that has the greatest mass?

The subatomic particle with the greatest mass is the neutron. Neutrons are found in the nucleus of atoms along with protons, but they are slightly more massive than protons. Electrons, which orbit the nucleus, have much less mass compared to neutrons and protons.


How many subatomic particle would be present in an atom of helium with a mass of 4 amu?

6 subatomic particles. 2 protons and 2 neutrons (that accounts for the mass of 4 amu) as well as 2 electrons.


A neutral subatomic particle in the nucleus of an atom?

A neutron is a neutral subatomic particle found within the nucleus of an atom. It has no electric charge but contributes to the mass of the atom. Neutrons help stabilize the nucleus by balancing the repulsive forces between positively charged protons.