14 dic 1934 anni - 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.
Aggiunto al nastro di tempo:
Data:
14 dic 1934 anni
Adesso
~ 90 years ago