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allotrope Some elements exist in several different structural forms, referred to as allotropes. Each allotrope has different physical properties.

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For much more information top top the Visual facets image check out the Uses and also properties ar below.

Discovery day 1808
found by Humphry Davy
beginning of the name The name is acquired from the Latin "calx" definition lime.


GroupA vertical column in the routine table. Members of a group commonly have similar properties and electron construction in their outer shell.

PeriodA horizontal row in the routine table. The atomic number of each aspect increases by one, reading from left come right.

BlockElements space organised into blocks by the orbital form in i m sorry the outer electrons room found. These blocks are called for the characteristics spectra castle produce: spicy (s), major (p), diffuse (d), and fundamental (f).

Atomic numberThe number of protons in one atom.

Electron configurationThe species of electrons above the critical (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 adjust occurs.

SublimationThe shift of a substance directly from the solid to the gas phase without passing with a liquid phase.

Density (g cm−3)Density is the massive of a problem that would fill 1 cm3 at room temperature.

Relative atom massThe mass of an atom family member to that of carbon-12. This is around the sum of the variety of protons and also neutrons in the nucleus. Where much more than one isotope exists, the value provided is the abundance weight average.

IsotopesAtoms the the same facet with different numbers of neutrons.

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CAS numberThe chemical Abstracts business registry number is a unique identifier of a certain chemical, draft to avoid confusion arising from different languages and also naming systems.