Question

Define molecular formula. Give significance of molecular formula

Answer 1

Answer:

a chemical formula that gives the total number of atoms of each element in each molecule of a substance — compare structural formula.

Answer 2

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❒ Molecular formula

• Atoms of elements combine to form molecules. So it's possible to represent the molecules in terms of symbols of their constituent atoms. The symbolic representation of a molecule is known as formula or molecular formula. A molecular formula is also known as chemical formula. It employs symbols to denote the molecule of an element or of a compound.

❒ Significance of molecular formula

The molecular formula of a compound has quantitative significance. It represents :-

• Both the molecule and the molecular mass of the compound.
• The respective numbers of different atoms present in one molecule of the compound.
• The ratios of the respective masses of the elements present in the compound.

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