0
LEAST mass? That would be photos or neutrinos, which have no mass at all.
Where Least is greater than zero? Electrons, probably; an electron is 1/1836th of a proton, I seem to recall.
Neutrinos actually have a small nonzero mass, so small it has yet to be determined. No neutrino has a mass of more than a few eV, the electron has a mass of about 0.5MeV.
Wiki User
∙ 13y ago
P Siva Goutham
Electron because it's mass is (9.1X10 to the power of -28)
Proton's mass is (1.672X10 to the power of -28)
Neutron's mass is (1.679X10-27)
Tom Schmidt
Dianna Carter
Wiki User
∙ 12y agoBeta has the least mass.
Sorted in order:
- beta: mass ~1/1800
- proton: mass ~1
- neutron: mass ~1+1/1800
- alpha: mass ~4
Wiki User
∙ 16y agoThe electron, with a mass of 9.109 382 15(45) × 10-31 Kg.
Wiki User
∙ 15y agoElectron. In most calculations, the mass of the electron isn't even factored in, as it is so small relative to the other two.
Wiki User
∙ 10y agoThe electron. It has an almost negligible mass relative to that of the proton and the neutron (which form the nucleus).
Wiki User
∙ 13y agoI think it's the electron.
Wiki User
∙ 13y agoThe electron.
Wiki User
∙ 11y agoThis particle is the electron.
Wiki User
∙ 11y agoElectrons
Add your answer:
Earn +20 pts
Is the electron or the neutron or the proton lighter?
The electron, the neutron and the proton are the building blocks of the atom. And of the three, the electron is far and away the lightest. The neutron is slightly heavier than the proton, and either particle is over 1800 times more massive than our little electron.
Where are the subatomic particles found in an atom?
the particles that make up an atom are; a proton/protons a neutron/neutrons an electron/electrons these are also made up of other particles but to go any further into this subject would require that you have at least a basic understanding of quantum mechanics and these particles are not important at any educational level below degree level (generaly speaking)
Particles with the smallest mass?
The proton is slightly less massive than the neutron, and the electron is many, many times less massive than either of them. That makes the electron the smallest of the "standard" particles that make up atoms. There are many smaller particles in what is called the particle zoo, but it is hard to sort them out as they are all uniformly unstable and disappear in very short periods of time. The electron is the least massive of the stable subatomic particles that make up the nucleus.Note: We added the last part because the neutron is not stable outside the nucleus of the atoms that it makes up. But of the "big three" particles that are the building blocks of the atom, the neutron, proton and electron, the electron is smallest. It's less than 1/1800th the mass of a proton.
Which has more mass-a proton or electron?
The proton has much more mass than the electron, by a factor of 1836 times, a ratio called "mu". Recent astronomical research suggests mu may have changed by 20 parts per million in the last 12 billion years, but I plan to wait at least a billion years for confirmation!
What is the fraction of the hydrogen atom's mass that is in the nucleus?
The atom's nucleus usually contains at least 99% of the atom's mass. The nucleus is made of protons and neutrons, and outside the nucleus reside the atom's electrons. A proton is about 1,836 times an electron's mass, and a proton's mass is similar to a neutron's mass. Therefore, an atom's electrons barely have any mass at all, compared to that atom's nucleus.
Which particle is the least massive a proton nuetron electron or nucleas?
electron is least, followed by proton and then neutron. Nucleus will have the highest mass as nucleus contains both protons and neutrons.
What one of a nucleus proton and neutron have the least amount of mass?
A proton has slightly less mass than a neutron.
Which has least mass neutron protron electron or nucleus?
Well, that's kinda a trick question because an electron is pure energy. An electron particle is also the smallest of the 4, so its the electron (eventhough an electron is a weichtless particle such as a graviton or magneton! Hope I helped!!
Which has the least amount of mass a molecule an atom an electron a neutron a proton?
The mass of an electron is the least among the options given here.
Who has the smallest mass electrons protons or neutrons?
Of the neutron, proton, and electron, the electron has the smallest mass.
Why does hydrogen need at least one proton in it's nucleus?
It is very simple. The hydrogen atom is composed of a nucleus with only one proton and an electron around the nucleus.
Which subatomic particle has the smallest mass alpha particle neutron electron proton?
among these Electron has the least mass....
Particles found in the nucleus of an atom?
The nucleus of an atom always contains at least 1 proton. It almost always contains at least 1 neutron as well.
What particles the one with the least mass is the electron proton neutron or neutrino?
Neutrinos, but their mass is very, very small.
Which weighs more proton neutron electron?
A Neutron weighs more than a proton. Than an electron. A Neutron weighs the most, and an electron weighs the least. A proton is in the middle. Although there are these three sub atomic particles, an atom is made up of 99 percent empty space! But from greatest to least in mass, it goes neutron, proton, then electron!
Is the electron or the neutron or the proton lighter?
The electron, the neutron and the proton are the building blocks of the atom. And of the three, the electron is far and away the lightest. The neutron is slightly heavier than the proton, and either particle is over 1800 times more massive than our little electron.
The nucleus contains both protons and electrons?
No! The nucleus of an atom consists of at least one proton and, in all but one instance, at least one neutron. An atomic nucleus does not include electrons.
