Question

Thomson's plum pudding model of the atom was most directly replaced or refuted by

a. Rutherford's discovery that atoms contain a nucleus
b. Chadwick's discovery of the neutron
c. Goldstein's discovery of protons
d. Democritus's idea that the atom is indivisible

Answer 1

A is the answer

Step-by-step explanation:

Answer 2

A. Rutherford's discovery that atoms contain a nucleus

Step-by-step explanation: