Alkaline Earth Metals
By Tanner Bryant
Main elements in Alkaline metals
Magnesium is a chemical element with symbol Mg and atomic number 12. Its common oxidation number is +2. It is an alkaline earth metal and the eighth-most-abundant element in the Earth's crust and ninth in the known universe as a whole.
Calcium is a chemical element with symbol Ca and atomic number 20. Calcium is a soft gray alkaline earth metal, and is the fifth-most-abundant element by mass in the Earth's crust.
Facts about Alkaline Metals
- They are silvery, shiny, and relatively soft metals.
- They are fairly reactive under standard conditions.
- They have two outer valence electrons which they readily lose.
- They all occur in nature, but are only found in compounds and minerals, not in their elemental forms.
- They react with halogens to form compounds called halides.
- All of them except beryllium react strongly with water.
- They tend to form ionic bonds, except for beryllium which forms covalent bonds.