Structure of Atom

All the substances are made up of tiny particles called

• Protons

• Electrons

• Atoms

• Nucleus

The meaning of Greek word "atomos" is

• whole

• incomplete

• cosmos

• indivisible

Name the scientist known as the father of the Modern Atomic Theory who proposed his theory in 1808.

• John Dalton

• Max Plank

• J J Thomson

• Rutherford

How many subatomic particles does an atom contain?

• 1

• 2

• 3

• 4

Which of the following is not the subatomic particle in the atom?

• nucleus

• protons

• electrons

• neutrons

Fill in the table by inserting the charge of proton and mass of an electron respectively.

• +1, -1

• -1, +1

• +1, 0

• 0, -1

How many protons would be present the atom of nitrogen?

• 7

• 14

• 21

• 28

Who performed experiments to prove the presence of protons in the nucleus?

• J J Thomson

• Ernest Rutherford

• John Dalton

• James Chadwick

Electron configuration of carbon is

• 2,6

• 2,4

• 2,2

• 2,5

Which of the following elements is not present in the first twenty elements?

• Boron

• Neon

• Sodium

• Silver