Alkaline Earth Metals

1
Alkaline Earth Metals

• Group IIA

2

• The alkaline earth metals are a series of
  elements comprising group 2 of the periodic
  table beryllium (Be), magnesium (Mg), calcium
  (Ca), strontium (Sr), barium (Ba) and radium
  (Ra).
• The alkaline earth metals are silvery colored,
  soft, low-density metals, which react readily
  with halogens to form ionic salts, and with
  water, though not as rapidly as the alkali
  metals, to form strongly alkaline hydroxides

3
Beryllium

• Beryllium is a toxic bivalent element, steel
  gray, strong, light-weight, primarily used as
  hardening agent in alloys. Beryllium has one of
  the highest melting points of the light metals.
  It has excellent thermal conductivity, is
  nonmagnetic, it resists attack by concentrated
  nitric acid and at standard temperature and
  pressures beryllium resist oxidation when exposts
  to air.

4
Magnesium

• Chemical element, metallic, symbol Mg, atomic
  number 12, atomic weight 24,312. Magnesium is
  silvery white and very light. Magnesium is very
  chemically active, it takes the place of hydrogen
  in boiling water and a great number of metals can
  be produced by thermal reduction of its salts and
  oxidized forms with magnesium. Magnesium is the
  eighth most abundant element and constitutes
  about 2 at the Earth's crust

5
Calcium

• The chemical element Calcium (Ca), atomic number
  20, is the fifth element and the third most
  abundant metal in the earths crust. Calcium ions
  solved in water form deposits in pipes and
  boilers and when the water is hard, that is, when
  it contains too much calcium or magnesium.

6
Strontium

• Strontium is a soft, silver-yellow,
  alkaline-earth metal. It has three allotropic
  crystalline forms. Strontium reacts vigorously
  with water and tarnishes in air, so it must be
  stored out of contact with air and water. Due to
  its extreme reactivity to air, this element
  always naturally occurs combined with other
  elements and compounds. Finely powdered strontium
  metal will ignite in air to produce both
  strontium oxide and strontium nitride.

7
Barium

• Barium is a silvery-white metal that can be found
  in the environment, where it exists naturally. It
  is very light and its density is half that of
  iron. Barium oxidizes in air, reacts vigorously
  with water to form the hydroxide, liberating
  hydrogen. Barium reacts with almost all the
  non-metals, forming often poisonous compounds.

8
Radium

• Radium is silvery, lustrous, soft, intensely
  radioactive. It oxidizes with exposure to air,
  turning from pure white to black. Radium is
  luminescent, corrodes in water to form radium
  hydroxide. Although is the heaviest member of the
  alkaline-earth group it is the most volatile.

9

• alkaline earth metals