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9th CBSE
IMPORTANT
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Which scientist discovered neutron?

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Important Questions on Structure of the Atom

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

Define neutron.

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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.
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9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 27

When does an electron become excited?

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9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 28

Define an atomic number of an element. Give one example.

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9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 29

Define the mass number of an element. Give one example.

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9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 30

What are nucleons? What is their number called?

EASY
9th CBSE
IMPORTANT
Chemistry for Class IX>Chapter 4 - Structure of the Atom>Exercise>Q 31

How are atomic number and mass number represent the symbol of the element?