Question

What was the model that first included electrons as subatomic particles?

a) Bohr Model
b) Rutherford Model
c) Plum Pudding Model
d) Dalton's Atomic Theory

Answer 1

The model that first included electrons as subatomic particles is the Bohr Model, proposed by Niels Bohr. It suggested that electrons move around the nucleus in circular orbits.

Step-by-step explanation:

The model that first included electrons as subatomic particles is the Bohr Model. Before the Bohr Model, there were other models proposed, such as the Plum Pudding Model and the Rutherford Model. However, it was Niels Bohr who proposed the idea that electrons move around the nucleus in circular orbits and that the energy of the electron is quantized.