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Standard IX
Chemistry
Molecules and Atomicity
Question

The chemical formula of a particular compound represents:
  1. the size of molecule
  2. the shape of its molecules
  3. the total number of molecules in the compound
  4. the number of different types of atoms in its molecule

A
the size of molecule
B
the number of different types of atoms in its molecule
C
the total number of molecules in the compound
D
the shape of its molecules
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Solution
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The chemical formula of a particular compound represents the number of different types of atoms in its molecule. For instance, the compound CO2 (carbon dioxide) has one carbon atom and two oxygen atoms. It does not represent the size or shape of the molecule or the number of molecules in the compound.

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