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It really depends on what you mean by "almost no mass".
For example: for a long time, it was thought that neutrinos might be massless. We now know their mass is not exactly zero (and that the three kinds have different masses), but we still don't know exactly what the masses are, the best we can do is say "they have to be less than (some number)." This is complicated by the fact that neutrinos undergo something called "oscillation" where they change from one kind to another, so if we could measure the mass of a neutrino, we'd actually be measuring the mass of a superposition of eigenstates.
Of the neutrinos, the electron neutrino has the lowest mass, with the muon neutrino being more massive and the tau neutrino being more massive still.
Photons, gluons, and the hypothetical gravitons all have an invariant mass of precisely zero.
The lightest confirmed particle that isn't a neutrino and doesn't have an invariant mass of zero is the electron. The electron is probably lighter than the tau neutrino, though for the reasons described above we can't really measure the tau neutrino's mass directly.
All quarks ... which can't exist in an unbound state below extremely high energy densities ... are more massive than electrons, with up quarks being the lightest at somewhere around 5 times the mass of the electron. The top quark is the most massive fundamental particle known, with more mass than most atoms(it's slightly more massive than the average thulium atom).
What else can I help you with?
What subatomic particles are presant in an alpha particale?
2 protons, 2 neutrons
What is a subatomic particles with almost no mass?
The electron is the lightest particle in the atom.
Is subatomic particles same as molar mass?
No. The two phrases have almost nothing to do with each other at all.
Does electron mean a subatomic particle with a negative charge?
Electrons are negatively charged subatomic particles, but have almost no mass. The mass of an electron is about 1/2000 that of a proton or neutron. The neutron is the most massive of the subatomic particles at 1.6755 x 10-24 grams.
What is a positively charged subatomic particale?
Protons are positively charged subatomic particles.
Which other particles have almost the same mass as protons?
Neutrons have almost the same mass as protons. They are both subatomic particles found in the nucleus of an atom and are collectively referred to as nucleons. The mass of a neutron is only slightly greater than that of a proton.
Which of the subatomic particles has a negative charge is found outside of the nucleus and has almost no mass?
The subatomic particle that fits this description is the electron. Electrons have a negative charge, are found outside of the nucleus in electron shells, and have a very small mass compared to protons and neutrons.
Does subatomic particles have the smallest mass of any subatomic particle?
The electron has the smallest mass between subatomic particles: 9,10938291(40).10-31 kg.
What is the smallest part of the atom that has almost no mass?
The smallest part of an atom would be a quark. Quarks are either up or down quarks, and have virtually no mass. Neutrinos have even less mass, but are not part of an atom.
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.
Which subatomic particle has a charge of 0 and a mass of 1 atomic mass unit?
A neutron is the subatomic particle with a charge of 0 and a mass of 1 atomic mass unit.
What is negatively charged particles of atoms with almost no mass called?
Negatively charged particles with almost no mass are called electrons. These subatomic particles orbit around the nucleus of an atom and are responsible for carrying electrical current and facilitating chemical reactions.
