A. Ernest Rutherford
B. James Chadwick
C. J. J. Thomson
D. Niels Bohr
Explanation: J. J. Thomson discovered the electron in 1897 through experiments involving cathode rays.
A. Ernest Rutherford
B. James Chadwick
C. J. J. Thomson
D. Niels Bohr
Explanation: J. J. Thomson discovered the electron in 1897 through experiments involving cathode rays.