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periodic Table

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

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For an ext information ~ above the Visual facets image watch the Uses and also properties ar below.

Discovery date ancient
uncovered by -
origin of the name The surname is derived from the Old English surname "coper" in turn obtained from the Latin "Cyprium aes", an interpretation a steel from Cyprus


GroupA vertical tower in the regular table. Members the a group generally have similar properties and also electron configurations in their external shell.

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

BlockElements are organised right into blocks by the orbital type in i beg your pardon the external electrons are found. These blocks are called for the characteristics spectra castle produce: spicy (s), major (p), diffusive (d), and an essential (f).

Atomic numberThe variety of protons in one atom.

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

Melting pointThe temperature at which the solid liquid phase readjust occurs.

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

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

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

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

IsotopesAtoms that the same element with various numbers the neutrons.

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CAS numberThe chemical Abstracts organization registry number is a unique identifier the a details chemical, design to avoid confusion developing from different languages and naming systems.