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

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For an ext information on the Visual facets image watch the Uses and properties section below.

Discovery day 1807
uncovered by Humphry Davy
beginning of the name The surname is acquired from the English word "potash".


GroupA vertical tower in the routine table. Members of a group typically have similar properties and also electron configuration in their external shell.

PeriodA horizontal heat in the routine table. The atomic variety of each aspect increases by one, analysis from left come right.

BlockElements are organised right into blocks through the orbital type in i beg your pardon the outer electrons room found. This blocks are named for the properties spectra castle produce: sharp (s), major (p), diffusive (d), and an essential (f).

Atomic numberThe variety of protons in one atom.

Electron configurationThe species of electrons over the critical (closed shell) noble gas.

Melting pointThe temperature at which the solid-fluid phase readjust occurs.

Boiling point The temperature in ~ which the liquid–gas 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 mass of a substance that would certainly fill 1 cm3 at room temperature.

Relative atomic 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 more than one isotope exists, the value given is the abundance weight average.

IsotopesAtoms the the same element with different numbers of neutrons.

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CAS numberThe chemical Abstracts organization registry number is a unique identifier the a certain chemical, designed to protect against confusion emerging from different languages and naming systems.