Sat January 21, 2012 By: Achyuth Murlei

Sub Atomic particles

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Sun January 22, 2012

Properties of the Three Basic Sub-Atomic Particles

Particle Electric Charge (C) Atomic Charge Mass(g) Atomic Mass (Au) Spin
Protons +1.6022 x 10-19 +1 1.6726 x 10-24 1.0073 1/2
Neutrons 0 0 1.6740 x 10-24 1.0078 1/2
Electrons -1.6022 x 10-19 -1 9.1094 x 10-28 .00054858 1/2

Standard Model's Elementary particle include followings

1) Six "flavors" of quarks which are as follows: bottom, top, strange, and charm, up, down.

2) Six types of leptons which are as follows : electron, electron neutrino, muon, neutrino, muon , tau neutrino, tau.

3) (force carriers) Twelve gauge bosons the photon of electromagnetism, the three W and Z bosons of the weak force, and the eight gluons of the strong force.

Example of composite particles -Two up quarks and one down quark make up a proton , While two protons and two neutrons make up the atomic nucleus of helium-4 . All hadrons are included in composite particles, a group composed of baryons (protons and neutrons are included as baryons) and mesons (pions and kaons are the examples of it ) all are examples of composite particles.

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