The Periodic Table/20 - Calcium (Ca)

Element Calcium (Ca, 20)

Here you can read more about the chemical element Calcium. Its shemical symbol is Ca and its atomic number is 20. The relative atomic mass of Calcium is 40.078 u. The elemental classification of Calcium is Alkaline earth metals, and it belongs to group 2 and period 4 in the Periodic Table of Elements.

The density of Calcium is 1550 kg/m3. And the mineral hardness of Calcium is 1.75 Mohs. The melting point of Calcium is 1115 Kelvin (842 ℃). The boiling point of Calcium is 1765 Kelvin (1492 ℃). Calcium was discovered in the year 1808 by Humphry Davy.

To the right (or below if you are using a mobile device with a smaller screen) you will find the information given above for the element Calcium ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.

Data about element Calcium

Chemical symbol
Element classification
Alkaline earth metals
Atomic number
Relativ atomic mass
Atomic mass
40.078 u
1550 kg/m3
Melting point
1115 K   (842 ℃)
Boiling point
1765 K   (1492 ℃)
Mineral hardness
1.75 Mohs
Discovered year
Discovered by
Humphry Davy