14 déc. 1934 - The Standard Model: The current model of the atom states that an atom consists of electrons orbiting the nucleus which exist in the electron shell. The electron is negatively charged. The nucleus consists of protons and neutron and the proton is positively charged whilst the neutron has no charge.
Ajouté au bande de temps:
Date:
14 déc. 1934
Maintenaint
~ Il y a 90 ans