Sagot :
Proton- E. Rutherford
Neutron-James Chadwick
Electron-J. J. Thomson
Answer:
PROTON -- Discovered by E. Rurtherford in 1909
ELECTON -- Discovered by J.J THOMSON in 1897
NEUTRON -- Discovered by James Chadwick in 1932
Explanation:
Sana makatulong