3.1.1 Atomic Structure

Question 1

Chronological order of the Models of the Atom?

Answer 1

• Sphere Model by John Dalton
• Plum pudding model by JJ
  Thomson
• Nuclear model by Ernest
  Rutherford
• Planetary model by Niels Bohr

Question 2

What is the difference between the sphere model and plum pudding model?

Answer 2

Presence of electrons

Question 3

What is the difference between the plum pudding model and Nuclear model?

Answer 3

Central positive charged nucleus surrounded by electron shells

Question 4

What is the difference between the Nuclear model and Planetary model?

Answer 4

It is the 3D version of the Nuclear model which displays different orbital levels

Question 5

Relative Charge of Protons

Answer 5

1+

Question 6

Relative Charge of Neutrons

Answer 6

0

Question 7

Relative Charge of Electrons

Answer 7

-1

Question 8

Relative Mass of Protons

Answer 8

1

Question 9

Relative Mass of Neutrons

Answer 9

1

Question 10

Relative Mass of Electrons

Answer 10

1/2000

Question 11

What are the fundamental particles present in an atom and how are they arranged?

Answer 11

An atom consists of a nucleus containing protons and neutrons and is surrounded by electrons