Electron mass

Electron mass is a fundamental property of electrons, representing the intrinsic amount of matter they possess. It is a measure of the electron’s resistance to acceleration.

  • Atomic Structure: The mass of electrons contributes to the overall mass of atoms and influences the behaviour of electrons within the atom.
    • The arrangement of electrons in orbitals and their energy levels are partly determined by their mass.
    • Energy levels are partly determined by their mass due to the interaction between the electrons and the positively charged nucleus of the atom.
    • The mass of an electron contributes to its inertia, which is its resistance to changes in motion.
    • This inertia affects the electron’s ability to respond to the electrostatic attraction from the nucleus and influences its distribution within the atom.
  • Chemical Bonding: Electron mass affects the strength of chemical bonds. The interaction between electrons and the positively charged nucleus, influenced by their masses, contributes to the formation and stability of chemical bonds.
  • Electrical Phenomena: The motion of electrons, influenced by their mass, generates electric currents and magnetic fields. Understanding electron mass is essential for explaining electrical and magnetic phenomena.
  • Particle Physics: Electron mass is a key parameter in particle physics, where interactions between particles and their properties are studied. The mass of electrons is involved in various calculations and theories related to particle interactions and the behaviour of matter at the subatomic level.
  • Relativistic Effects: At high speeds approaching the speed of light, the electron’s mass increases according to Einstein’s theory of special relativity. This relativistic effect is important in understanding the behaviour of particles at high energies and in various applications, such as particle accelerators.
  • Electron mass is expressed in kilograms (kg). The standard value of electron mass is approximately 9.10938356 × 10^-31 kg.
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