Carbon-14
type: Entity
type: Concept
broader: Carbon

Carbon
type: Entity
type: Concept
created: 2022-02-07T17:00:00
broader: Chemical entity
definition: [Wikipedia] Carbon (from Latin: carbo "coal") is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table. Carbon makes up only about 0.025 percent of Earth's crust. Three isotopes occur naturally, 12C and 13C being stable, while 14C is a radionuclide, decaying with a half-life of about 5,730 years. Carbon is one of the few elements known since antiquity.
in scheme: ozcar-theia
narrower: Carbon-14
narrower: Carbon-13

Chemical entity
type: Concept
narrower: Carbon

Carbon-13
type: Entity
type: Concept
broader: Carbon