science
what did thomson do?
discovered the existence of electrons
what did rutherford do?
discovered the noyau
bohr?
la modele planetaire
dalton
descovered l'atome
masse of a proton
1
charge of a proton
+
where is the proton
in the noyau
masse of an electron
0
charge of an electron
-
where is the electron
outside of the noyau on the couches
masse of neutron
1
charge of neutron
none
where is the neutron
in the noyau