Answer
a) Marie Curie discovered several radioactive elements along with the process of radioactivity
b) Becquerel used uranium ore to discover natural radioactivity
c) James Chadwick discovered the neutron
d) Rutherford identified artificially transmuted elements
Work Step by Step
a) Marie Curie discovered several radioactive elements along with the process of radioactivity
b) Becquerel used uranium ore to discover natural radioactivity
c) James Chadwick discovered the neutron
d) Rutherford identified artificially transmuted elements