It is currently not confirmed whether electrons and quarks are actually made up of anything smaller - rishon or otherwise, so this is all quite hypothetical.
think you mean atome but there are sub atomic particles
No. Scientists have discovered sub-atomic particles such as quarks.
The atom is the smallest particle of an element that retains it's characteristics. Sub-atomic particles such as protons, neutrons and electrons form the atom and it is the amount of each of these sub-atomic particles that make the element that element.
There is no evidence of a smaller particle than the quarks and electrons and other fundamental particles, but there is a theory of smaller particles called "rishons". The theory states that there are T, V, t, and v rishons. The T and t rishons are antoparticles, the T's having an electric charge of +1/3, and the t's having -1/3. The v and V are antiparticles, but they are both neutral. (Again, this is only theory.)
You think probable to electron, with a negative charge.
The atom is the smallest particle of an element that retains it's characteristics. Sub-atomic particles such as protons, neutrons and electrons form the atom and it is the amount of each of these sub-atomic particles that make the element that element.
If that substance is an element, the smallest part is the atom which, if broken down further into atomic particles, loses its identity.
Of the 3 atomic particles protons, neutrons and electrons, electrons have the smallest mass.
Jonah Lehrer proposed the idea of subatomic particles called Rishons in 2002, suggesting they could explain the properties of quarks and leptons. However, this hypothesis has not been widely accepted in the scientific community.
The atom is the smallest particle of an element that retains it's characteristics. Sub-atomic particles such as protons, neutrons and electrons form the atom and it is the amount of each of these sub-atomic particles that make the element that element.
The smallest particles in a compound are electrons.
An atom is the smallest particle of an element that has the properties of that element. The atom consists of a certain amount of electrons, protons and usually neutrons. The amount of each of these sub-atomic particles is what makes an element. No Sub-Atomic Particles have any characterisitics of an element. It is the collective arrangement of electrons and protons (and usually neutrons) which gives an element its characteristics. An atom is the smallest particle that has elemental characteristics.