Carbon-12
Carbon-12
Carbon-12 (pronunciation: /ˈkɑːrbən/ -12) is a stable isotope of Carbon, the most abundant isotope of carbon, accounting for 98.93% of carbon on Earth.
Etymology
The term "Carbon-12" is derived from the element Carbon, with the number 12 referring to the atomic weight of the isotope. The word Carbon comes from the Latin word carbo, meaning "charcoal".
Description
Carbon-12 is of particular importance in its use as the standard from which atomic masses of all nuclides are measured, thus, its atomic mass is exactly 12 atomic mass units. It is used in the definition of mole, the basic unit of amount of substance in the International System of Units (SI).
Related Terms
See Also
External links
- Medical encyclopedia article on Carbon-12
- Wikipedia's article - Carbon-12
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