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Glossary

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

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


Discovery date approx 1500BC
found by -
origin of the name Mercury is called after the planet, Mercury.
Allotropes

Glossary

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

PeriodA horizontal row in the periodic table. The atomic variety of each element increases by one, reading from left to right.

BlockElements space organised into blocks through the orbital type in i beg your pardon the outer electrons are found. These blocks are called for the characteristic spectra castle produce: spicy (s), primary (p), diffusive (d), and an essential (f).

Atomic numberThe number of protons in one atom.

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

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

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

SublimationThe shift of a substance straight from the solid come the gas phase 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 family member to that of carbon-12. This is roughly the sum of the number of protons and also neutrons in the nucleus. Where much more than one isotope exists, the value given is the abundance weighted average.

IsotopesAtoms that the same aspect with various numbers of neutrons.

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CAS numberThe chemical Abstracts service registry number is a distinctive identifier that a certain chemical, design to protect against confusion developing from various languages and also naming systems.