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giant molecular structure
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Giant Molecular Structure
Solid structure made up of many similar atoms joined by covalent bonds in one dimension (long chains, such as polymers), two dimensions (flat sheets as in graphite, where each layer is a giant molecule), or in three dimensions (such as in diamond and silica).
General properties
Giant molecules do not conduct electricity as they have no free electrons as solids and no free ions when molten. They are some of the hardest structures known because of the strong bonds between their atoms. These bonds also give them high melting and boiling points. Graphite, an allotrope of carbon, is an anomaly here as free electrons between its layers enable it to conduct electricity.
© RM 2009. Helicon Publishing is division of RM.
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