Leptons are divided into three families with 4 particles (2 particles, plus their two anti-particles) in each family. In the electron family we have the electron, positron, electron neutrino and electron anti-neutrino. Each family has a higher mass than the one before it so the tauon is heavier than the muon which is heavier than the electron. The physical reason for there being three families is completely unknown and will probably win you a Nobel prize if you can figure it out!
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Leptons are divided into families to account for differences in mass and electric charge. Each family consists of two particles, like the electron and the electron neutrino, and these particles interact with each other through weak nuclear force interactions. The three families of leptons are related by a property called lepton number conservation.
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Quarks are elementary particles that combine to form protons and neutrons, which are found in the nucleus of atoms. Leptons are another type of elementary particle that do not participate in the strong nuclear force and include electrons, muons, and tau particles. Quarks have fractional electric charges while leptons have integer electric charges.
Quarks, most particles made of quarks, leptons, and the W boson.
The series that lists particles in order from smallest to greatest mall is the Standard Model of particle physics, which categorizes particles into quarks, leptons, and bosons based on their properties. Quarks are the smallest, followed by leptons, and then bosons, which are force carriers.
Taking a 'particle' as a proton/ neutron, both of these have spin 1/2. So do all leptons (electrons, neutrinos, etc).