allotropes Some elements exist in several various structural forms, dubbed allotropes. Each allotrop has various physical properties.
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For an ext information on the Visual aspects image see the Uses and properties section below.
|uncovered by||Antoine-Jérôme Balardin Montpellier, France and also Carl Löwig in Heidelberg, Germany|
|origin of the name||The name originates from the Greek "bromos" an interpretation stench.|
GroupA vertical column in the regular table. Members that a group frequently have similar properties and also electron configurations in their external shell.
PeriodA horizontal row in the periodic table. The atomic variety of each aspect increases through one, reading from left to right.
BlockElements room organised into blocks through the orbital kind in i beg your pardon the outer electrons are found. This blocks are called for the characteristic spectra they produce: spicy (s), major (p), diffuse (d), and an essential (f).
Atomic numberThe variety of protons in one atom.
Electron configurationThe arrangements of electrons above the last (closed shell) noble gas.
Melting pointThe temperature in ~ which the solid liquid phase readjust occurs.
Boiling point The temperature in ~ which the liquid gas phase change occurs.
SublimationThe transition of a substance directly from the solid come the gas phase without passing with a fluid phase.
Density (g cm−3)Density is the fixed of a problem that would certainly fill 1 cm3 at room temperature.
Relative atomic massThe mass of an atom loved one to the of carbon-12. This is approximately the amount of the variety of protons and also neutrons in the nucleus. Where more than one isotope exists, the value offered is the abundance load average.
IsotopesAtoms the the same element with various numbers the neutrons.
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CAS numberThe chemical Abstracts organization registry number is a distinct identifier that a specific chemical, draft to stop confusion developing from different languages and naming systems.