Most elements {metal, element}| are solid at room temperature, melt at high temperature, are gray to white in color, shine if polished, conduct electricity and heat, are malleable, are ductile, are dense, and tend to lose electrons in chemical reactions. The most-metallic elements are in periodic-table lower left. Elemental metals can bind to themselves in pure metals or alloys. They can bind to non-metals to make salts.
Few elements {semimetal} {metalloid}| are soft and crumbly solids or hard and brittle solids, have low melting temperature, are fairly shiny, are gray or colorless, are semiconducting, are not malleable, are not ductile, are rocklike, and have medium density.
Elements {non-metal}| can be colorless gases or colored soft solids, have low melting point, have no shine, have no conductivity, have low density, and tend to gain electrons in chemical reactions. The most-non-metallic elements are in periodic-table top right.
Radium compounds glow in the dark {radioactive element}|. Uranium and plutonium compounds are fuels for nuclear reactors.
Nuclei {transuranium element}| {transuranic element} can be heavier than uranium.
Hitting heavy nuclei with neutrons makes elements 93, 94, 99, and 100 [discovered by 1958].
Hitting heavy nuclei with alpha particles makes elements 95, 96, 97, 98, and 101 [discovered by 1958].
Hitting heavy nuclei with light-element ions, such as boron-5, makes elements 102 to 106 [discovered from 1958 to 1974].
Light-element ions can hit and split nuclei of elements above 106.
Hitting light nuclei with heavy ions {cold fusion, light nucleus} makes elements 107, 108, 109, 111, and 112 [discovered from 1980 to 1996].
Hitting light nuclei with heavy ions, such as calcium-48, makes elements 110 and 113 to 118 [discovered from 1994 on].
stability
At 114 is stable region, in which element lasts longer, especially element with 184 neutrons. Lead is also stable at 82 protons and 126 neutrons, at magic mountain.
5-Chemistry-Inorganic-Chemical-Element
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Date Modified: 2022.0225