Previous Page...   Printer Version Science Constants - Mass, Electron Symbol: me Value: 9.10938188(72) × 10-31 kg 5.485799110(12) × 10-4 u 0.510998902(21) MeV Category: - Electron Particle Constants Description:   [ H O M E ] [ S C I E N C E ] [ M A T H S ] [ A S T R O N O M Y ] [ Download ] [ Shop ] [ Contact ] [ About ]