EASY
9th CBSE
IMPORTANT
Earn 100

Who discovered the nucleus of atom ?

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Important Questions on Structure of the Atom

HARD
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 20

State the major drawback of Rutherford's model of the atom.

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 21

Which scientist successfully explained the stability of the atom?

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 22

Why are Bohr's orbits called stationary states?

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 23

Which scientist discovered neutron?

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 24

Define neutron.

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 25
What is the mass and charge of a neutron ?
HARD
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 26
What are the symbols used to represent different orbits? Arrange them in order of increasing energy.
EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 27

When does an electron become excited?