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Electron | Definition, Mass, Facts | Britannica - Encyclopedia Britannica Electron, lightest stable subatomic particle known It carries a negative charge of 1 6 x 10^-19 coulomb, which is considered the basic unit of electric charge The electron was discovered in 1897 by the English physicist J J Thomson during investigations of cathode rays
Atom - Conductors, Insulators, Properties | Britannica Atom - Conductors, Insulators, Properties: The way that atoms bond together affects the electrical properties of the materials they form For example, in materials held together by the metallic bond, electrons float loosely between the metal ions
Electric charge | Properties, Examples, Units, Facts | Britannica electric charge, basic property of matter carried by some elementary particles that governs how the particles are affected by an electric or magnetic field Electric charge, which can be positive or negative, occurs in discrete natural units and is neither created nor destroyed
Atom - Electrons, Nucleus, Bonds | Britannica Atom - Electrons, Nucleus, Bonds: Once the way atoms are put together is understood, the question of how they interact with each other can be addressed—in particular, how they form bonds to create molecules and macroscopic materials
Electric dipole | Polarity, Charge Distribution Interaction | Britannica An atom in which the centre of the negative cloud of electrons has been shifted slightly away from the nucleus by an external electric field constitutes an induced electric dipole When the external field is removed, the atom loses its dipolarity
Neutron | Definition, Charge, Mass, Properties, Facts | Britannica Since free neutrons are electrically neutral, they pass unhindered through the electrical fields within atoms and so constitute a penetrating form of radiation, interacting with matter almost exclusively through relatively rare collisions with atomic nuclei
Ion | Definition, Chemistry, Examples, Facts | Britannica Ion, any atom or group of atoms that bears one or more positive or negative electrical charges Positively charged ions are called cations; negatively charged ions, anions Ions migrate under the influence of an electrical field and are the conductors of electric current in electrolytic cells
electricity - Students | Britannica Kids | Homework Help Electric power appears as heat when the electric field in a circuit acts on an electron and imparts to the electron kinetic energy When the electron strikes an atom, it transfers most of the energy to the atom
Atom - Electrons, Protons, Neutrons | Britannica Atom - Electrons, Protons, Neutrons: During the 1880s and ’90s scientists searched cathode rays for the carrier of the electrical properties in matter Their work culminated in the discovery by English physicist J J Thomson of the electron in 1897