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Sunday, January 22, 2012

Structural and molecular formulae

Structural and molecular formulae

Structural formula:
An expanded chemical formula representing the arrangement of atoms and bonds within a molecule.

Molecular formula:
Molecular formulas are a shorthand way of describing molecules and compounds. Chemists use formulas to talk and write about molecules and to indicate how molecules behave in chemical reactions. The molecular formula indicates, in special notation, which elements make up the molecule and how many atoms are needed of each element.

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