The formula of an element or compound is the symbol which refers to one molecule of an element or a compound.
Formulae of some compounds
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Formulae
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Names
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NaCl
|
Sodium Chloride
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|
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HCl
|
Hydrogen Chloride
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|
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MgCl2
|
Magnesium Chloride
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AlCl3
|
Aluminium Chloride
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CaO
|
Calcium oxide
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