Question

Which hypothesis of Thomson's atomic model was later found to be not true by Niels Bohr and why?

A) The atom is a solid, indivisible sphere.
B) Electrons are embedded randomly within the atom.
C) Electrons move in fixed orbits around the nucleus.
D) The nucleus contains both protons and neutrons.
E) The atom is neutral overall.

Answer 1

The hypothesis of Thomson's atomic model that was found to be not true by Niels Bohr is that electrons move in fixed orbits around the nucleus.

Step-by-step explanation:

The hypothesis of Thomson's atomic model that was later found to be not true by Niels Bohr is C) Electrons move in fixed orbits around the nucleus.

Thomson's model, known as the plum pudding model, proposed that electrons were embedded randomly within the atom, like raisins in plum pudding. However, Niels Bohr's model of the atom, known as the Bohr model, showed that electrons in fact move in specific energy levels or shells around the nucleus in discrete orbits.

Bohr's model was based on the idea that electrons can only occupy certain regions of space with specific energy levels, and their movement is governed by the emission and absorption of energy as they transition between these energy levels.