View example sentences, synonyms and word forms for Allotrope.
Allotrope meaning
Any form of an element that has a distinctly different molecular structure to another form of the same element, with different physical properties and often different chemical properties. | An other form, a different shape of a lexical unit. | An alternative shape of a cognitive structure.
Synonyms of Allotrope
Example sentences (20)
Above this temperature and in ambient light, this metastable allotrope transforms into the more stable black allotrope.
Although many other chemists have repeated this advice, IUPAC and most chemistry texts still favour the usage of allotrope and allotropy for elements only.
By 1912, Ostwald noted that the allotropy of elements is just a special case of the phenomenon of polymorphism known for compounds, and proposed that the terms allotrope and allotropy be abandoned and replaced by polymorph and polymorphism.
Characteristics Properties A vial containing the black allotrope of antimony Native antimony with oxidation products Crystal structure common to Sb, AsSb and gray As Antimony is in the nitrogen group (group 15) and has an electronegativity of 2.05.
If the steel is cooled slowly, the iron will gradually change into its low temperature allotrope.
In nature Geology Some hypotheses relating to diamond formation posit a possible role for cavitation—namely cavitiation in the kimberlite pipes providing the extreme pressure needed to change pure carbon into the rare allotrope that is diamond.
It has two main allotropes : at room temperature, the stable allotrope is β-tin, a silvery-white, malleable metal, but at low temperatures it transforms into the less dense grey α-tin, which has the diamond cubic structure.
Of the other discovered allotropes, carbon nanofoam is a ferromagnetic allotrope discovered in 1997.
One of his designs of a geodesic dome structure bears great resemblance to C 60 ; as a result, the discoverers of the allotrope named the newfound molecule after him.
Ozone, an allotrope of oxygen, is toxic to most life.
Some claims of a fourth allotrope have been made, but they are so far not proven.
The alpha allotrope has a hexagonal crystalline structure and is stable at low temperatures.
The gray allotrope of selenium is made from spirals on selenium atoms, while one of the red allotropes is made of stacks of selenium rings (Se 8 ).
The gray allotrope of selenium is soft, with a Mohs hardness of 2, and brittle.
The high-temperature gamma allotrope has a body-centered cubic crystalline structure.
The metal is a dimorphic allotrope of an hexagonal α form that changes into a body-centered cubic (lattice) β form at convert.
The white phosphorus allotrope presents a significant hazard because it ignites in air and produces phosphoric acid residue.
The yellow allotrope of antimony is the most unstable.
This form is metastable at room temperature and gradually reverts to crystalline molecular allotrope, which is no longer elastic.
This unstable allotrope, being molecular, is the most volatile, least dense, and most toxic.