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protons and nuetrons

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What are the two parts of the atom that have a mass of 1 atomic mass unit?

The two parts of the atom that have a mass of approximately 1 atomic mass unit (amu) are protons and neutrons. Protons are positively charged particles found in the nucleus of an atom, while neutrons are neutral particles that also reside in the nucleus. Together, these particles make up the majority of an atom's mass. Electrons, on the other hand, have a negligible mass compared to protons and neutrons.


What particles are used to determined the mass of an atom?

Mass of an atom = mass of protons + mass of neutrons


What is the particle of an atom that carries a negative charge?

The electron. There are three particles in an atom , they are:- Proton ; carries a charge of (+), and has an arbitrary mass of '1' Neutron ; carries no charge (o) , and has an arbitrary mass of '1' The above two particles are found the the nucleus of an atom, and are collectively named 'nucleons'. Electron ; carries a charge of (-), and has an arbitrary mass of 1/1860. It is found outside the nucleus of an atom.


The mass of all particles of an atom added together is its what?

The sum of protons and neutrons in an atom is called mass number.


What are the two principal components of the nucleus of the atom?

The two principal components of an atom at a subatomic level are Protons and Neutrons. Protons are subatomic particles with a mass of 1 and a charge of 1+ Neutrons are subatomic particles with a mass of 1 and a charge of 0 or neutral


Which of the following particles is used to determine the mass of an atom?

Mass of an atom is determined by the no. of protons+ no. of neutrons in the atom.


Is a proton the least mass?

In an atom, there are 3 types of particles: protons, neutrons and electrons.Theoretically, protons and neutrons weight 1 Atomic Mass Unit. An electron weights 1/1836 of an Atomic Mass Unit. Therefore, in an atom, electrons weigh the least.


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

These particles are protons and neutrons.


Which particle has the least mass and where is this particle located in the atom?

The smallest particles that have been discovered and that don't only exist in theory are the quarks. They are what make up protons, neutrons, all kinds of baryons, and a few other categories of particles. But there is a theory of smaller particles that make up quarks, electrons, and other particles that were previously believed to be fundamental (But, again, these particles only exist in theory). These particles are to be called "rishons" if discovered.


What particle or particles carry virtually all the mass (weight) of any atom?

Virtually all of the mass of an atom is carried by the proton and the neutron. The electron has very, very little mass relative to these two particles.


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.


Which subatomic particles has the lest mass?

In the atom the electron is the lightest.