Infobox

Test1

Test3

name = Electron image = caption = Hydrogen atom orbitals at different energy levels. num_types = composition = Elementary particle<ref name="prl50"/> statistics = Fermionic group = Lepton generation = First interaction = Gravity, electromagnetic, weak antiparticle = Positron (also called antielectron) theorized = Richard Laming discovered = J. J. Thomson (1897)<ref name="thomson"/> symbol = Template:SubatomicParticle, Template:SubatomicParticle mass = Template:Val<ref name="2010 CODATA" /> Test 4