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least - electron
most - the top quark
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoIn the atom the lightest is the electron.
With a mass of zero, the photon, gluon, and graviton are the lightest subatomic particles.
Wiki User
∙ 14y agoIf you mean "atom" than the electron. But if you mean smallest of all its the quark.
Wiki User
∙ 14y agoThe smallest parts of an atom are quarks.
However the smallest part out of Electrons, Protons and Neutrons are Electrons
Wiki User
∙ 12y agoOf the protons, electrons, and neutrons, the neutrons are most massive and the electrons are least massive.
Wiki User
∙ 8y agoThe electron is the least massive particle of an atom.
Wiki User
∙ 11y agoelectrons
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What particle is least massive?
The least massive principle atomic particle is the electron. Neutrons and protons are much more massive and are about equal in mass. Of course, there are even smaller particles such as quarks which are less massive than even electrons.
Which particle has the least amount of mass?
The 'rest mass' of the photon is zero ... but the photon is never at rest, and it has plenty of mass at the speed of light, at which it is always traveling. so that let's the photon out. Amongst particles that actually have rest mass, but not much of it, the neutrino probably has the least.
Which part of Dalton's theory did Thomson's findings dispute?
The atom is the smallest known particle.
Most massive particles in an atom?
99.9% of an atom's mass is concentrated in the nucleus, with protons and neutrons having almost the same mass, with neutrons being slightly higher. So your question would be, 'What atom has the most protons and neutrons combined?' And that answer is Nobelium. Nobelium has 102 protons and 160 neutrons which makes it the most 'massive' atomic particle, even more so then Lawrencium which has 103 protons but only 159 neutrons. Of course, in a few months, we could have a new, more massive element.
What is subatomic particle in an atom has a negative electrical change?
This particle from the atom is the electron.
What particle in an atom is the least massive?
electron
Which in an atom has the least mass in an atom?
Which particle? The electron.
What subatomic particle is the least and most massive and which subatomic particle is respectively?
least - electron most - the top quark
What particle is least massive?
The least massive principle atomic particle is the electron. Neutrons and protons are much more massive and are about equal in mass. Of course, there are even smaller particles such as quarks which are less massive than even electrons.
What particle found in an atom has the least mass?
the electron
How massive is a alpha particle?
an alpha particle is made of two protons and 2 neutrons. its basically the same as the nucleus of a helium atom
Subatomic particle that has the least mass?
In the atom this particle is the electron. Generally in the particle physics: photons, gluons, neutrinos.
Why do alpha particle have higher ionizaion energy than beta particle?
Alpha particles are far more massive. Alpha particle is an (ionized) helium atom, a beta particle is just an electron.
What stable particle found in an atom has the least mass?
the electron
What is heaviest particle found in the nucleus of an atom?
Neutrons are... very slightly... more massive than protons.
Where in the periodic table would have the least massive atom?
The element hydrogen is least massive as it has only one proton, one electron.
Which subatomic particle is least massive?
The three main subatomic particles are the proton, neutron, and electron. Of these three, the electron has the least amount of mass at about 0.0005 amu or atomic mass units.
