Section 2: Development of atomic model

Question 1

What is the plum pudding model?

Answer 1

Thompsons plum pudding model shows that the atom is a ball of positive charge with the negative electrons embedded in it. Was incorrect.

Question 2

What is the nuclear model?

Answer 2

Rutherford’s alpha particle scattering experiment found a central area of positive charge. The nuclear model has a positive nucleus and electrons in shells.
Chadwick later discovered neutrons.
Bohr discovered the arrangement of electrons in shells.