Among the given subatomic particle, an electron has the least mass because the mass of an atom is almost equal to the mass of the nucleus as the position of electron is outside the nucleus. It is known that the mass of neutral subatomic particles is the highest. So, the mass of a neutron is highest as it is neutral.

The fundamental particle that has least mass is electron.

electron
An electron is a negatively charged particle that travels in the space around the nucleus. In other words, it resides outside of the nucleus. It has a negligible mass and has a charge of –1.

The subatomic particle with almost no mass is the electron. The approximate mass of the electron is 1/1840th of an atomic mass unit.

Unlike protons and neutrons, which consist of smaller, simpler particles, electrons are fundamental particles that do not consist of smaller particles. The mass of an electron is only about 1/2000 the mass of a proton or neutron, so electrons contribute virtually nothing to the total mass of an atom.

As the mass of an electron is relatively very low (1/1837 times the mass of a proton) therefore,it is considered as negligible in front of other components such as neutrons and protons.

Atomic Mass Therefore, the number of neutrons in an atom contributes significantly to its mass, but not to its charge. Electrons are much smaller in mass than protons, weighing only 9.11 × 10−28 grams, or about 1/1800 of an atomic mass unit.

neutron
neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.

The heaviest of these particles is the neutron. Alpha particle has two protons and two neutrons bound together into a particle identical to a helium nucleus. They are generally produced in the process of alpha decay, but may also be produced in other ways, that makes its mass to be equal to 2mp + 2mn.

electron, lightest stable subatomic particle known. It carries a negative charge of 1.602176634 × 10−19 coulomb, which is considered the basic unit of electric charge. The rest mass of the electron is 9.1093837015 × 10−31 kg, which is only 1/1,836the mass of a proton.

The subatomic particle with the largest mass is the neutron. However, the difference in mass between a neutron and proton is very small.

In the atom this particle is the electron. Generally in the particle physics: photons, gluons, neutrinos. What stable particle found in an atom has the least mass? the electron Which subatomic particle contributes the least to the mass of an atom? electron Which has the least mass protons neutrons or electrons? This particle is the neutron.

The particle that has the smallest mass in the world is a part of the subatomic particle. The electron in the subatomic particle has the smallest mass. Which subatomic particle is least massive?

Additionally, which subatomic particle has the most mass? neutron. What is the smallest mass in an atom? The atom with the smallest mass is the hydrogen atom; its mass is about 10- 27 kg.

The atom with the smallest mass is the hydrogen atom; its mass is about 10- 27 kg. The masses of other atoms go up to about 200 times this. The nucleus of an atom is about 10-15 m in size; this means it is about 10-5 (or 1/100,000) of the size of the whole atom. 27 Related Question Answers Found