The History of Atomic Structure

Who is known as the father of modern atomic theory?

• John Dalton

• Albert Einstein

• Isaac Newton

• Niels Bohr

Which experiment led to the discovery of the electron?

• Rutherford's Gold Foil Experiment

• Millikan's Oil Drop Experiment

• Thomson's Cathode Ray Experiment

• Bohr's Hydrogen Spectrum Experiment

The concept of indivisible particles called 'atomos' was first introduced by ______.

• Democritus

• Aristotle

• Plato

• Socrates

Who discovered the neutron?

• James Chadwick

• Niels Bohr

• J.J. Thomson

• Ernest Rutherford

Which of the following is not a subatomic particle?

• Proton

• Neutron

• Electron

• Molecule

In atomic theory, the electron is located in the _______.

• Nucleus

• Electron cloud

• Proton shell

• Neutron band

Democritus had no ______ evidence to support his thoughts.

• theoretical

• experimental

• mathematical

• logical

In the Cathode Ray Tube Experiment, the plates used were:

• Both positive

• Both negative

• One positive and one negative

• Neutral

What is the main purpose of the Gold Foil Experiment?

• To discover electrons

• To understand the structure of the atom

• To measure the mass of protons

• To study chemical reactions.

In the Gold Foil Experiment, alpha particles that rebound are interacting with what?

• Electron cloud

• Nucleus

• Neutrons

• Protons