EASY
7th ICSE
IMPORTANT
Earn 100

In the Modern Periodic Table - atoms of all elements are arranged according to their increasing order of - atomic numbers. An atom of nitrogen has seven protons & seven electrons. State what would be its atomic number.

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Important Questions on Atomic Structure

MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 4 - Atomic Structure>EXERCISE>Q 4
State the main points of the contradiction of Dalton's atomic theory by the Modern Atomic Theory.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 4 - Atomic Structure>EXERCISE>Q 5
'Atoms of the same element or different elements combine to form a molecule'.
Give two examples each of
a] Atoms of the same element
b] Atoms of different elements combining to form a molecule.
MEDIUM
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 4 - Atomic Structure>EXERCISE>Q 6

Explain the term - 'atomicity'. Give reasons why - 

a] Helium is considered monoatomic, but hydrogen a diatomic molecule.

b] Ozone is considered triatomic, but phosphorus a tetratomic molecule.

EASY
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 4 - Atomic Structure>EXERCISE>Q 7

State the atomicity of neon.

EASY
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 4 - Atomic Structure>EXERCISE>Q 7
State the atomicity of oxygen.
EASY
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 4 - Atomic Structure>EXERCISE>Q 7
State the atomicity of chlorine.
EASY
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 4 - Atomic Structure>EXERCISE>Q 7
State the atomicity of argon.
EASY
7th ICSE
IMPORTANT
Simplified Chemistry>Chapter 4 - Atomic Structure>EXERCISE>Q 7
State the atomicity of sulphur.