Wikipedia:WikiProject Elements/Legends

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  • Note: as of 17 August 2013, the English wikipedia has changed categorisation and background colors of nonmetal elements. Below is the new categorisation scheme. Differences are about these old categories: "other nonmetal", "halogen", "post-transition metals"

Nonmetals are subdevided in diatomic nonmetals, polyatomic nonmetals (and noble gases, unchanged). The category other/poor metals is renamed into post-transition metals without further changes. This is the new scheme:

Metal Metalloid
Nonmetal unknown chemical properties
[note 1]
Alkali metal
Alkaline earth metal
Inner transition metal Transition metal
post-​transition metal
Polyatomic nonmetal
Diatomic nonmetal
Noble gas
Superactinide [note 2] Eka-​superactinide [note 2]
[note 2] [note 2] predicted
  1. ^ Unknown chemical properties (grey) may be used instead of predicted
  2. ^ a b c d Situation does not arise


Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (transition metal (predicted))
Darmstadtium (transition metal (predicted))
Roentgenium (transition metal (predicted))
Copernicium (transition metal)
Ununtrium (post-transition metal (predicted))
Flerovium (post-transition metal)
Ununpentium (post-transition metal (predicted))
Livermorium (post-transition metal (predicted))
Ununseptium (metalloid (predicted))
Ununoctium (noble gas (predicted))
Ununennium (alkali metal (predicted))
Unbinilium (alkaline earth metal (predicted))
Unquadunium (superactinide (predicted))
Unquadbium (superactinide (predicted))
Unquadtrium (superactinide (predicted))
Unquadquadium (superactinide (predicted))
Unquadpentium (superactinide (predicted))
Unquadhexium (superactinide (predicted))
Unquadseptium (superactinide (predicted))
Unquadoctium (superactinide (predicted))
Unquadennium (superactinide (predicted))
Unpentnilium (superactinide (predicted))
Unpentunium (superactinide (predicted))
Unpentbium (superactinide (predicted))
Unpenttrium (superactinide (predicted))
Unpentquadium (superactinide (predicted))
Unpentpentium (superactinide (predicted))
Unpenthexium (transition metal (predicted))
Unpentseptium (transition metal (predicted))
Unpentoctium (transition metal (predicted))
Unpentennium (transition metal (predicted))
Unhexnilium (transition metal (predicted))
Unhexunium (transition metal (predicted))
Unhexbium (transition metal (predicted))
Unhextrium (transition metal (predicted))
Unhexquadium (transition metal (predicted))
Unhexpentium (alkali metal (predicted))
Unhexhexium (alkaline earth metal (predicted))
Unhexseptium (post-transition metal (predicted))
Unhexoctium (post-transition metal (predicted))
Unhexennium (post-transition metal (predicted))
Unseptnilium (post-transition metal (predicted))
Unseptunium (diatomic nonmetal (predicted))
Unseptbium (noble gas (predicted))
Unbiunium (superactinide (predicted))
Unbibium (superactinide (predicted))
Unbitrium (superactinide (predicted))
Unbiquadium (superactinide (predicted))
Unbipentium (superactinide (predicted))
Unbihexium (superactinide (predicted))
Unbiseptium (superactinide (predicted))
Unbioctium (superactinide (predicted))
Unbiennium (superactinide (predicted))
Untrinilium (superactinide (predicted))
Untriunium (superactinide (predicted))
Untribium (superactinide (predicted))
Untritrium (superactinide (predicted))
Untriquadium (superactinide (predicted))
Untripentium (superactinide (predicted))
Untrihexium (superactinide (predicted))
Untriseptium (superactinide (predicted))
Untrioctium (superactinide (predicted))
Untriennium (superactinide (predicted))
Unquadnilium (superactinide (predicted))
Unsepttrium (eka-superactinide (predicted))
Unseptquadium (eka-superactinide (predicted))
Unseptpentium (eka-superactinide (predicted))
Unsepthexium (eka-superactinide (predicted))
Unseptseptium (eka-superactinide (predicted))
Unseptoctium (eka-superactinide (predicted))
Unseptennium (eka-superactinide (predicted))
Unoctnilium (eka-superactinide (predicted))
Unoctunium (eka-superactinide (predicted))
Unoctbium (eka-superactinide (predicted))
Unocttrium (eka-superactinide (predicted))
Unoctquadium (eka-superactinide (predicted))

Earlier category scheme[edit]

Categories, reduced set[edit]

When a reduced category set, or more general category set, is used, below are their color legends. It is unadvised to use different category levels (different legend rows) in a single table.

unknown chemical properties
[note 1]
Alkali metal
Alkaline earth metal
Inner transition metal
Transition metal
post-transition metal
Polyatomic nonmetal
Diatomic nonmetal
Noble gas
  1. ^ Unknown chemical properties (grey) may be used instead of predicted

(As of December 2012)