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What is Chemical formulae. Write the Characteristics of chemical formulae. |
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Answer» Chemical formulae It is the symbolic representation of the composition of a compound. Characteristics of chemical formulae • The valencies or charges on ion must balance. • When a compound is formed of metal and non-metal, symbol of metal comes first. E.g., CaO, NaCl, CuO. • When polyatomic ions are used, the ions are enclosed in brackets before writing the number to show the ratio. E.g., Ca(OH)2, (NH4)2SO4 |
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