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| Категории верхнего уровня |
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| Изотопы (@213) |
| ISOTOPE [Анг.] |
Атомы с одним и тем же атомным числом, но различной массой.
Isotopes - Two or more forms of an element that have the same atomic number but different numbers of neutrons in the atomic nucleus and therefore a different atomic weight. Most elements occur naturally as mixtures of isotopes. The symbol for an isotope usually consist of the mass number placed as a leading superscript before the elemental symbol. In atmospheric chemistry, long lived isotopes such as carbon-14 (14C) are used to determine the age of objects that contained living matter. Other isotopes are used to track the routes of air parcels in the atmosphere.
[Science; v266; 1584-1586; 1994.]
[Dictionary of Science; R.K. Barnhart; page 337; 1986; Houghton Mifflin Company; Boston.]
Atmospheric Chemistry Glossary |
| Тип: Схема |
| Относится к разделам: |
| / Вещество / Химические элементы |
| / Физика |
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