Structure of An Atom | Structure of the Atom | Assessment | English | Grade 9

Rutherford's experiment led to the discovery of ___________ .

• electrons

• protons

• neutrons

• nucleus

Answer explanation

Since one in many alpha particles rebounded, it lead to the discovery of nucleus.

Tags

NGSS.HS-PS1-8

Which of the following is true about the nucleus?

• It is positively charged

• Very dense and hard

• Very small

• All of the above

Answer explanation

According to the Rutherford's Experiment, all of the given statements are true.

Tags

NGSS.HS-PS1-8

The first structure of atom was given by ___________ .

• Rutherford

• J J Thomson

• Neil Bohr

• J Chadwick

Answer explanation

First model of atom was given by J J Thomson.

Which particles were used by Rutherford for his experiment?

• Atoms

• Protons

• Alpha particles

• UV radiations

Answer explanation

Rutherford used alpha particles for his experiment.

Name the scientist who discovered protons.

• Rutherford

• J J Thomson

• Goldstein

• Chadwick

Answer explanation

Goldstein discovered the protons.