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It's not. There are many particles lighter than electrons. As to why electrons have the mass they do... the first person to figure that out goes on the short list for a free trip to Sweden and a nice medal.
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∙ 14y ago
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Is mass of electron nearly 1840 times less the mass of proton?
Electron is the lightest sub atomic particle it is 1836 times less than as that of the mass of the proton it's mass is 9.1*10-31kg
Which subatomic particle is very small?
Proton is a positive particle and electron is a negative particle.
What is the name of the subatomic particle in the atom that has a negative charge and orbits around the nucleus?
Electron is a negative sub atomic particle which revolves round the nucleus.
Is electron donor positively charged or negatively?
An electron is a negative fundamental particle.
What was the first particle created?
This particle was the electron discovered in 1897 by Joseph John Thomson.
What is the lightest particle in the universe?
An Electron.
What is the light est subatomic particle?
The lightest subatomic particle is the electron.
What is a subatomic particles with almost no mass?
The electron is the lightest particle in the atom.
What subatomic particle has the less mass?
In the atom the electron is the lightest.
What subatomic particles are the lightweights of the atom?
The lightest particle in the atom is the electron.
What subatomic particle Has the smallest relative mass?
In the atom the electron is the lightest.
Which of the subatomic particle is the lightest?
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.
What is the lightest subatomic particle of an atom?
electrons the smallest but weigh as much as protons neutrons weigh nothing ~Kay
What particle has almost no mass?
The lightest subatomic particle is the electron.
Which particle is the lightest particale in the following 1. electon 2. neutron 3. proton 4. a-particles?
The electron is the lightest particle in the list. A proton is 1836 times more massive than an electron. Neutrons are just slightly more massive than a proton, and an alpha particle consists of two protons and two neutrons.
What is the lightest proton neutron electron or nucleus?
Electron is the lightest.
What particle in the atom is the least massive?
least - electron most - the top quark
