20

Ca

Calcium

40.078

Alkaline Earth
Solid

Discovery

Davy, Humphry (1808)

Etymology

Latin via greek

Meaning

Pebble and/or limestone

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Face-centered cubic

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

839.0 °C

1112.15 K

Boiling point

  (at 101.325 kPa)

774.0 °C

1047.15 K

Density

  (at 21 °C and 101.325 kPa)

1.55 g/cm3

Electronegativity

1.00