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174 bytes added ,  18:50, June 11, 2007
New page: If a pure element can form several physically and chemically different substances, it can form '''allotropes'''. The most famous is carbon, which has four allotropes.
If a pure [[element]] can form several physically and chemically different substances, it can form '''allotropes'''. The most famous is [[carbon]], which has four allotropes.

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