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Both the Photon and the Gluon have zero mass.
Theoretically, the photon has zero rest mass (related to the fact that the electromagnetic force has unlimited range).
The current experimental upper limit is 10−18 eV/c2, or about 2×10-54 kg. For comparison, that means the photon is at least 5×1023 times lighter than the electron.
See the related links section for more information.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoHydrogen has the lowest Atomic Mass of approximately 1.01 grams per mol
The neutrino has SOME mass, but so little that the exact amount is still unknown.
Photons have no mass at all.
Wiki User
∙ 9y agoThere are some particles that have zero rest mass - such as the photon, and pressumably the (not-yet-discovered) graviton. In a vacuum, such particles can only move at the speed of light.
The neutrino has a mass very close to zero - and it travels at a speed very near to the speed of light.
Wiki User
∙ 12y agoThe electrons. they are 1/1840th the mass of the neutrons or protons.
Wiki User
∙ 11y agoWithout a list of things to compare masses, no one will be able to give a proper answer.
Wiki User
∙ 12y agoThe smallest mass is the neutron
Anonymous
it's the electron a+
Anonymous
electrons
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What subatomic particle Has the smallest relative mass?
In the atom the electron is the lightest.
What is the smallest particle a substance?
An atom is the smallest particle of a substance.
What is the smallest particle of the element iron that can still be classified as iron?
An iron atom is the smallest iron particle that still has the properties of iron.
What is the smallest particle of the atom?
I'm not exactly sure but it's probably: electrons, neutrons, and protons.The electron is the smallest particle of the atom, in the traditional sense. However, the neutrino is far smaller than the electron, and is thus the smallest particle. You could also argue that the photon, with zero rest mass, is actually the smallest, but that's a quantum mechanics question that seems to be beyond the scope of this question.
What is called the smallest particle of an element that still retains the characteristics of that element?
This particle is the atom.
Why it is not possible to find the absolute mass of an atom?
It is the smallest particle
What subatomic particle Has the smallest relative mass?
In the atom the electron is the lightest.
Which part of Dalton's theory did Thomson's findings dispute?
The atom is the smallest known particle.
The smallest particle of an element is called?
The smallest particle of an element is called an atom.
Is proton the smallest particle in a chemical element atom?
The smallest particle in the atom is the electron.
Which particle has the smallest mass atoms or electron?
An electron has a much smaller mass than any atom.
What is the smallest particle a substance?
An atom is the smallest particle of a substance.
What in an atom?
An atom is a particle, the smallest particle that can exist by itself.
What is the smallest particle of the element iron that can still be classified as iron?
An iron atom is the smallest iron particle that still has the properties of iron.
What is the smallest particle of the atom?
I'm not exactly sure but it's probably: electrons, neutrons, and protons.The electron is the smallest particle of the atom, in the traditional sense. However, the neutrino is far smaller than the electron, and is thus the smallest particle. You could also argue that the photon, with zero rest mass, is actually the smallest, but that's a quantum mechanics question that seems to be beyond the scope of this question.
The smallest particle of an element that retains its identity in a chemical reaction?
An atom is the smallest particle of an element that can be uniquely identified as that specific element.Note that this question is different from asking "What is the smallest particle in an atom?" (see related question below). Atoms are composed of smaller particles (protons, electrons, and neutrons), but the smallest thing that has the identity of a specific element is the atom.The smallest particle of an element that still retains all that element's properties is called an ATOM.
How do you explain an atom?
atom is the smallest particle of matter
