- A table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns
- (chemistry) a tabular arrangement of the chemical elements according to atomic number as based on the periodic law
- Helium is placed next to hydrogen instead of on top of neon because it is part of the s2 group. In addition to the blocks listed in this table, there is a hypothetical g-block which is not pictured here. g-block elements can be seen in the expanded extended periodic table.
- The names for chemical elements in East Asian languages, along with those for some chemical compounds (mostly organic), are among the newest words to enter the local vocabularies.
- (nonmetal) nonmetallic: not containing or resembling or characteristic of a metal; “nonmetallic elements”
- (nonmetal) a chemical element lacking typical metallic properties
- (Nonmetal) Any element that isn’t a metal or metalloid. Do not usually form cations
- (metal) metallic: containing or made of or resembling or characteristic of a metal; “a metallic compound”; “metallic luster”; “the strange metallic note of the meadow lark, suggesting the clash of vibrant blades”- Ambrose Bierce
- A solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity (e.g., iron, gold, silver, copper, and aluminum, and alloys such as brass and steel)
- Broken stone for use in making roads
- (metal) metallic element: any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
- Gold and silver (as tinctures in blazoning)
- cover with metal
This is an amorphous allotrope of boron. It is more reactive than the crystalline form. It is the only element of group 13 (formally group 3) that can exist in non-metallic form.
A red allotrope of phosphorus. It is more stable and less reactive than white phosphorus.