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An '''electron''' is a subatomic particles of spin 1/2. It couples with photons and, thus, is electrically charged. It is a [[lepton]] with a rest mass of <math>9.109*10^{-31}</math>kg and an electric charge of <math>-1.602*10^{-19}</math> C, which is the smallest known charge possible for an isolated particle (confined [[quarks]] have fractional charge). The electric charge of the electron ''e'' is used as a unit of charge in much of [[physics]].  

An '''electron''' is a subatomic particles of spin 1/2. It couples with photons and, thus, is electrically charged. It is a [[lepton]] with a rest mass of <math>9.109*10^{-31}</math>kg and an electric charge of <math>-1.602*10^{-19}</math> C, which is the smallest known charge possible for an isolated particle (confined [[quarks]] have fractional charge). The electric charge of the electron ''e'' is used as a unit of charge in much of [[physics]].  

Electron pairs within an orbital system have opposite spins due to the [[Pauli exclusion principle]]; this characteristic spin pairing allows electrons to exist in the same quantum orbital, as the opposing magnetic dipole moments induced by each of the electrons ensures that they are attracted together.

Electron pairs within an [[orbital]] system have opposite spins due to the [[Pauli exclusion principle]]; this characteristic spin pairing allows electrons to exist in the same quantum orbital, as the opposing magnetic dipole moments induced by each of the electrons ensures that they are attracted together.

Current theories consider the electron as a point particle, as no evidence for internal structure has been observed.

Current theories consider the electron as a point particle, as no evidence for internal structure has been observed.