1 янв 1808 г. - Calcium discovery

Описание:

Humprhy Davy discovered
Melting point: 842°C
Boiling point: 1484°C
Atomic number: 20
Isotopes: 10
Calcium compounds are widely used. There are vast deposits of limestone (calcium carbonate) used directly as a building stone and indirectly for cement.

Добавлено на ленту времени:

Дата:

Изображения: