Alkaline Earth Metals
By Group 7
Melting and Boiling Points
Beryllium’s melting point is 1,287 degrees Celsius and the boiling point is 2,970 degrees Celsius.
Magnesium’s melting point is 650 degrees Celsius and the boiling point is 1,107 degrees Celsius.
Calcium’s melting point is 839 degrees Celsius and the boiling point is 1,484 degrees Celsius.
Strontium’s melting point is 769 degrees Celsius and the boiling point is 1,384 degrees Celsius.
Barium’s melting point is 727 degrees Celsius and the boiling point is 1,897 degrees Celsius.
Radium’s melting point is 700 degrees Celsius and the boiling point is 1,737 degrees Celsius.
The Alkali Earth Metals were discovered starting in the early 15th century.They are named after their oxides, the Alkaline Earths. The Magnesium compound was discovered in 1618 by a farmer in England. The last element is called Radioactive Radium, which was taken out from Uraninite in 1898. Beryllium has been known since the time Ptolemaic Dynasty in Egypt. They thought that Beryllium was an aluminium silicate. Beryl was later found to contain an element when, in 1797, Louis-Nicolas Vauquelin dissolved aluminium hydroxide from beryl in an alkali. Calcium sulfate has been used to fix broken bones. Calcium wasn't isolated until 1808. Thomas Charles Hope discovered strontium 1793 when he realized that the ores on strontium contained new minerals, which he names “strontities”. Strontium was isolated in 1808 by Sir Humphry Davy.
2. Alkaline Earth metals need to be stored under mineral oil to keep them away from moisture and oxygen.