Carbon
41carbon 13 — noun : a heavy isotope of carbon having the mass number 13, constituting about 1/70 of natural carbon, and used in tracer studies in chemistry and biology symbol C13 or 13C * * * the stable isotope of carbon having an atomic mass number 13, used… …
42Carbon-11 — Infobox isotope alternate names = symbol =C mass number =11 mass = num neutrons =5 num protons =6 abundance = halflife = 20.38 minutes error halflife = background =#eee text color = decay product =Boron 11 decay symbol =B decay mass =11 decay… …
43carbon — car•bon [[t]ˈkɑr bən[/t]] n. 1) chem. a nonmetallic element found combined with other elements in all organic matter and in a pure state as diamond and graphite Symbol: C 9) at. wt.: 12.011 at. no.: 6 sp. gr.: (of diamond) 3.51 at 20°C; (of… …
44carbon-13 — noun the least abundant of the two stable isotopes of carbon, , having six protons and seven neutrons See Also: carbon 12, carbon 13 NMR, carbon 14 …
45carbon — noun ADJECTIVE ▪ pure ▪ Diamonds are crystals of pure carbon. ▪ organic ▪ radioactive ▪ activated CARBON + NOUN …
46carbón — (m) (Básico) mineral negro y sólido que sirve para calentar la casa Ejemplos: En los pueblos la gente todavía utiliza las calderas de carbón. El carbón es una de las principales fuentes de energía. Colocaciones: carbón de piedra, carbón pardo …
47carbon — noun 1》 the chemical element of atomic number 6, a non metal which has two main forms (diamond and graphite), occurs in impure form in charcoal, soot, and coal, and is present in all organic compounds. (Symbol: C) 2》 a rod of carbon in an arc… …
48carbon 12 — the isotopic carbon atom that comprises 99 percent of naturally occurring carbon, and that since 1961 has been used as the standard for atomic weight by representing a unit of 12.00000. Also, carbon 12 /kahr beuhn twelv /. [1940 45] * * * …
49carbon-12 — noun The most abundant of the two stable isotopes of carbon, , having six protons and six neutrons; it is the standard for atomic weight and is used to define the mole. See Also: carbon 13, carbon 14 …
50carbon-14 — noun a radioactive isotopes of carbon, , having six protons and eight neutrons; it is used in radiocarbon dating Syn: radiocarbon See Also: carbon 12, carbon 13 …
