| allotropy |
the phenomenon of an element existing in two or more physical forms
출처: wordnet.princeton.edu/perl/webwn
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| allotropy |
Certain chemical elements have the ability to exist in two or more different structural forms known as allotropes. These allotropes may possess different physical properties such as density and melting points. Allotropic elements include carbon, tin, phosphorus and sulphur. Each allotrope is stable within a certain range of temperature and pressure only, and under certain conditions an allotrope can be converted into another.
출처: www.ch.ic.ac.uk/vchemlib/mol/glossary/
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