What is meant by the term chemical formula?

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Sujoy Das

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Chemical formula is an expression which shows the number and type of atoms present in one molecule of a substance. Atoms are denoted by their symbols. For example the chemical formula for water is H2O which means water has two atoms of Hydrogen and 1 atom of Oxygen.
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Student

A chemical formula is the representation of a substance constituting correct number of atoms in one molecule of that substance.
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The three subatomic particle of atom is proton,neutron and electron.
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Teacher

Chemical formula is an expression which shows the number and type of atoms present in one molecule of a substance. Atoms are denoted by their symbols. For example the chemical formula for water is H2O which means water has two atoms of Hydrogen and 1 atom of Oxygen.
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Tutor

A chemical formula is composed of two types Chemical symbole representing the elements and subscript to show the no. Of atoms of each elements present.
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