allotrope Some facets exist in several different structural forms, referred to as allotropes. Each allotrope has various physical properties.
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For more information top top the Visual aspects image view the Uses and properties ar below.
|uncovered by||Carl Auer von Welsbach|
|origin of the name||The surname is obtained from the Greek "prasios didymos" definition green twin.|
GroupA vertical column in the routine table. Members the a group generally have similar properties and also electron construction in their outer shell.
PeriodA horizontal heat in the periodic table. The atomic variety of each facet increases through one, analysis from left to right.
BlockElements space organised into blocks through the orbital type in which the external electrons are found. These blocks are named for the characteristics spectra lock produce: spicy (s), primary (p), diffusive (d), and basic (f).
Atomic numberThe variety of protons in one atom.
Electron configurationThe arrangements of electrons above the last (closed shell) noble gas.
Melting pointThe temperature at which the solid-fluid phase adjust occurs.
Boiling point The temperature in ~ which the liquid gas phase adjust occurs.
SublimationThe change of a substance directly from the solid to the gas step without passing through a fluid phase.
Density (g cm−3)Density is the massive of a problem that would fill 1 cm3 in ~ room temperature.
Relative atom massThe fixed of one atom loved one to that of carbon-12. This is around the sum of the variety of protons and neutrons in the nucleus. Where much more than one isotope exists, the value provided is the abundance weight average.
IsotopesAtoms the the same aspect with different numbers that neutrons.
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CAS numberThe chemical Abstracts company registry number is a unique identifier the a details chemical, draft to avoid confusion arising from different languages and naming systems.