Allotrope Definition

Pure phosphorus exists in several forms called allotropes.
Pure phosphorus exists in several forms called allotropes. BXXXD, Tomihahndorf, Maksim, Materialscientist (Free Documentation License)

Allotrope Definition: The term allotrope refers to one or more forms of an elementary substance.

Examples: Graphite and diamond are both allotropes of carbon. O2 and ozone, O3, are allotropes of oxygen.

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