Question

who described atoms as small spheres that could not be divided into anything smaller?
○ bohr
○ dalton
○ rutherford
○ thomson

Explanation:

To solve this, we recall atomic models:

• Bohr proposed electrons in orbits around nucleus.
• Dalton's atomic theory described atoms as indivisible, solid spheres.
• Rutherford discovered the nucleus (planetary model).
• Thomson proposed the plum - pudding model (atoms with electrons in positive charge).

So Dalton is the one who described atoms as small, indivisible spheres.

Answer:

B. Dalton