Sir Humphry Davy was thediscoverer of calcium, in1808. He isolated calciumwhen he electrolyzed limeand mercuric oxide, HgO.He was a chemist andinventor and consideredBritains leading scientistat the time. His biggestcontributions were inmining and agriculture.
Calcium comes from the Latin termcalx, meaning lime. It occurs naturallyin limestone. Calcium makes up anestimated 3.5% of the earth’s crust!
Atomic number is 20 Mass is 40.078 amu Melting point of 839.0 degrees Celsius Boiling point of 1484.0 degrees Celsius 20 Protons 20 Neutrons 20 Electrons Alkaline Earth Density of 1.55 g/cm3 Silvery Color
•Stalactites, as shown tothe left, are mainlycalciumcarbonate, CaCO3. Youwill also find calciumcarbonate ineggshells, shells ofmollusks, snails, andpearls!•Calcium oxide, CaO, isused for treatment ofdrinking water and alsoused in the process ofmaking cement.
Calcium is an important part of animal skeletons.Calcium is also necessary in plant growth.
42Ca 43Ca 44Ca 46Ca are all carbonate isotopes and 48Ca is a carbonate and oxide isotope.There are 19 total isotopes, theseare just the stable ones. They are used in clinical and nutritional research. Calcium deficiency in women is related to increased severity of osteoporosis, and in children calcium deficiency can cause development of rickets.
Pure calcium is $20.00 per 100g.You can find this on the internet fromvarious suppliers or they havesupplements online or in drugstores.