proton - positively charged subatomic particle, electron - negatively charged and the lightest subatomic particle, mass number - the sum of protons and neutrons in an atom, atomic number - represents the number of protons of an element, neutron and proton - located inside the nucleus of an atom,

Tauler de classificació

Estil visual

Opcions

Canvia de fonament

Restaurar desada automàtica: ?