Last Activity: 11 Years ago
The electron was identified and assigned the negative charge in 1897 by J.J. Thomson
The proton was discovered in 1918 by Ernest Rutherford.
The neutron was discovered by James Chadwick in 1932
Proton= Ernest Rutherford.
Neutron= James Chadwick.
Electron= J. J. Thomson
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Last Activity: 2 Year ago(s)