Francium - Реферат по английскому языку
Тезисы:
- [4] All isotopes of francium decay into either astatine, radium, or radon.
- [4] Francium is also less stable than all synthetic elements up to element 105.
- Francium is an alkali metal whose chemical properties most resemble those of caesium.
- [10] [11] Nearly all francium salts are water-soluble.
- Due to its instability and rarity, there are no commercial applications for francium.
- [21] Perey then suggested francium, after France.
- [15] It is also calculated that there is at most 30 g of francium in the earth's crust at any time.
- The francium is then injected into a glass bulb.
- Initially, about 1000 francium atoms were trapped in the experiment.
- This was the very first time that anyone had ever seen francium.
Предметы
Все предметы »
Актуальные Рефераты по английскому языку
- Научное наследие В.В. Виноградова
15 Кб, 15 стр
39
- The Socialist-Revolutionaries and the labor movement (the beginning of the twentieth century)
12 Кб, 8 стр
25
- London (Places to Visit)
10 Кб, 2 стр
24
- Проблемы перевода
18 Кб, 20 стр
23
- Функционирование конвенциональной нормы при переводе текста
43 Кб, 17 стр
22
- Санскрит и его грамматический очерк
16 Кб, 20 стр
22
- Роль выдающегося ученого Федора Михайловича Хитрова в создании отечественной стоматологии
10 Кб, 7 стр
22
- Происхождение русского языка
14 Кб, 16 стр
21
- Кириллические памятники славянской письменности
4 Мб, 22 стр
21
- The political thinking of Hobbes, Locke and Rousseau decisively shaped the western intellectual trad...
10 Кб, 6 стр
21
- Показать еще »