Wikipedia:WikiProject Elements/Legends

Category

  • This section has been deprecated; due to the bewildering variety of slightly different categories in the literature and disagreement on their boundaries, a strict scheme based on blocks has been adopted as of January 2021.
  • 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
#cccc99 		Nonmetal unknown chemical properties
#e8e8e8
[note 1]
Alkali metal
#ff9d9d 		Alkaline earth metal
#ffdead 		Inner transition metal Transition metal
#ffc0c0 		post-​transition metal
#cccccc 		Polyatomic nonmetal
#a1ffc3 		Diatomic nonmetal
#e7ff8f 		Noble gas
#c0ffff
Lanthanide
#ffbfff 		Actinide
#ff99cc 		Superactinide [note 2] Eka-​superactinide [note 2]
predicted
#d8bcbc 		predicted
#ffecd3 		[note 2] [note 2] predicted
#d1ddff 		predicted
#c6dd9d 		predicted
#ffe2e2 		predicted
#d8d8d8 		predicted
#e2e2aa 		predicted
#d0ffe1 		predicted
#f2ffc2 		predicted
#ddffff
  1. ^ Unknown chemical properties (grey) may be used instead of predicted
  2. ^ a b c d Situation does not arise

Usage

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

Earlier category scheme

Categories, reduced set

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.

Metal
#eee8aa 		Metalloid
#cccc99 		Nonmetal
#b0e0e6 		unknown chemical properties
#e8e8e8
[note 1]
Alkali metal
#ff9d9d 		Alkaline earth metal
#ffdead 		Inner transition metal
#d8bfd8 		Transition metal
#ffc0c0 		post-transition metal
#cccccc 		Polyatomic nonmetal
#a1ffc3 		Diatomic nonmetal
#e7ff8f 		Noble gas
#c0ffff
  1. ^ Unknown chemical properties (grey) may be used instead of predicted

(As of December 2012)

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