The Proton, in regular hyrdogen, and also neutrons in other isotopes like deuterium.
The electron has the smallest mass between subatomic particles: 9,10938291(40).10-31 kg.
Positron
Proton or neutron
electrons
Number of protons= Atomic number Number of neutrons= Mass number-Atomic number Number of electrons=Number of protons (If there is no charge on the atom)
The electron is the subatomic particle with the least mass. It has a mass of about 1/1836 of a proton or neutron.
In the atom the electron is the lightest.
In the atom this particle is the electron. Generally in the particle physics: photons, gluons, neutrinos.
The electron.
The electron is the lightest particle in the atom.
These particles are protons and neutrons.
Electrons have a mass of only about 0.0005 as much as protons or neutrons.
electrons the smallest but weigh as much as protons neutrons weigh nothing ~Kay
The largest subatomic particle (by mass) is the proton. The mass of subatomic particles is measured in atomic mass units (amu). The proton has a mass of 1.007 amu, the neutron has a mass of 1 amu, and the electron has a mass of .0005 amu.
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.
6 subatomic particles. 2 protons and 2 neutrons (that accounts for the mass of 4 amu) as well as 2 electrons.
The neutron is a subatomic particle with no net electric charge and a mass slightly larger than that of a proton.