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There are leptons, of which have electrical and three of which do not. 

They appear to be point-like particles without internal structure.  This means they can be said to be

The best known lepton is the . The other two charged leptons are the () and the (), which are charged like electrons but have a lot more .

The other leptons are the three types of (). They have no electrical charge, very little mass, and they are very hard to find.

For each lepton there is a corresponding antimatter particle called an

The anti-electron has a special name, the .  It is equal in to the electron but opposite in .

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