top of page

Calcium

Chemical symbol: Ca

Atomic number: 20

Atomic mass: 40.079

Group: 2 (Alkali earth metals)

Period: 4

Element category: Alkali earth metals

Block: s-block

Number of protons: 20

Number of electrons: 20

Number of neutrons (in the most common isotope): 20

Sources:

  • Knowledge Encyclopedia (book)

  • SCIENCIA (book)

bottom of page