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प्रश्न
Explain the terms ‘chemical formula’.
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उत्तर १
Chemical formula is a representation of a substance either element or compound by means of symbols.
उत्तर २
Chemical Formula: “A molecule of a substance element or compound could be represented by symbols. Representation known as chemical formula i.e. molecular formula of oxygen gas is O2 water H2O, hydrochloric acid HCl etc.
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| (a) Carbon | (1) O |
| (b) Chlorine | (2) I |
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| (d) Phosphorus | (4) C |
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