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allotrope Some aspects exist in several different structural forms, called allotropes. Each allotrope has various physical properties.

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

Discovery date 1790
found by Adair Crawford
beginning of the name Strontium is named after Strontian, a tiny town in Scotland.


GroupA vertical column in the periodic table. Members the a group typically have comparable properties and electron configurations in their outer shell.

PeriodA horizontal heat in the regular table. The atomic variety of each element increases by one, analysis from left to right.

BlockElements space organised right into blocks by the orbital form in i beg your pardon the outer electrons space found. This blocks are named for the properties spectra they produce: sharp (s), primary (p), diffuse (d), and an essential (f).

Atomic numberThe number of protons in one atom.

Electron configurationThe kinds of electrons over the last (closed shell) noble gas.

Melting pointThe temperature in ~ which the solid liquid phase readjust occurs.

Boiling point The temperature at which the lpg phase readjust occurs.

SublimationThe change of a substance straight from the solid come the gas phase without passing through a liquid phase.

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

Relative atom massThe mass of one atom relative to that of carbon-12. This is roughly the amount of the variety of protons and neutrons in the nucleus. Where an ext than one isotope exists, the value given is the abundance weighted average.

IsotopesAtoms of the same facet with various numbers the neutrons.

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CAS numberThe chemistry Abstracts company registry number is a distinct identifier that a certain chemical, design to stop confusion occurring from different languages and also naming systems.