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allotrope Some aspects exist in several various structural forms, referred to as allotropes. Each allotrop has various physical properties.

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For more information ~ above the Visual facets image view the Uses and properties section below.

Discovery day 1817
discovered by Johan respectable Arfvedson
beginning of the name The name is obtained from the Greek "lithos" meaning stone.


GroupA vertical tower in the periodic table. Members that a group frequently have similar properties and also electron configuration in their external shell.

PeriodA horizontal row in the regular table. The atomic number of each aspect increases by one, analysis from left to right.

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

Atomic numberThe variety of protons in an atom.

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

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

Boiling point The temperature at which the liquid gas phase adjust occurs.

SublimationThe change of a substance directly from the solid to the gas step without passing v a liquid phase.

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

Relative atom massThe massive of an atom loved one to that of carbon-12. This is about the sum of the variety of protons and also neutrons in the nucleus. Where an ext than one isotope exists, the value provided is the abundance weight average.

IsotopesAtoms that the same element with different numbers that neutrons.

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CAS numberThe chemical Abstracts organization registry number is a distinctive identifier that a particular chemical, designed to protect against confusion occurring from different languages and also naming systems.