Calcium
By: Maice Glasssett
Ca
atomic number- 20
atomic mass- 40
protons- 20
neutrons- 20
electrons- 20
valence electrons- 2
group number- 2
group/family name- alkali earth metals
Properties
* Metal
* 2 valence electrons
* very reactive
Metal
* ductile
* malleable
* good conductor of heat and electricity