Study Materials

NCERT Solutions for Class 9th Science


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Chapter 3. Atoms and Molecules

Additional -Questions 3




Additional -Questions:

Q1. What is atomicity?

Ans: The number of atoms contained in a molecule of a substance is called its atomicity. 

Q2. How molecules are categrised on the base of atomicity?


1. Monoatomic Molecules (Molecule having 1 atom)

2. Diatomic Molecules (molecule having 2 atoms)

3. Triatomic Molecules (molecules having 3 atoms)

4. Tetraatomic Molecules (molecules having 4 atoms)

5. Ployatomic Molecules (molecules having more than 4 molecules) 


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Chapter Contents: