Question

4. Ernest Rutherford’s atomic model included a nucleus comprised of positive particles called protons. Later, James Chadwick discovered neutrons. How did Chadwick’s discovery change the atomic model? (1 point)
The new model showed a negatively charged nucleus.
The new model showed a neutrally charged nucleus.
The new model showed a larger electron cloud.
The new model showed a nucleus with two types of particles.

Answer 1

It's 4, chadwick had discovered neutrons, before being only protons and electron