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My nucleus has 20 protons and 20 neutrons. My atomic mass is 40.078.
My ElectronsI have 20 electrons, that fill up 4 orbitals.
state at room temperature- solid
group number- 2
period number- 4
group name- alkaline earth metals
melting point- 1115 k
boiling point- 1757 k
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I am the fifth most abundant element in the Earth's crust. but, even thought I am so abundant, I am never found free in nature. about 4.2 percent of the earth's crust is made of calcium.
(above) metallic calcium
Oxygen, Hydrogen, most of the Halogens...
Hydrides- calcium (II) hydride Flourides- calcium (II) flouride Chlorides- calcium (II) chloride, calcium (II) chloride 6-water more compounds...
Metallic calcium was isolated by Sir Humphrey Davy in 1808 when he mixed lime and mercuric oxide. Today, the demand for metallic calcium is not very high, so now calcium is used in vacuum tubes as a getter to remove trace of gases.
My job in the world includes assisting in blood clotting, reducing osteoporosis, and giving people strength in their bones and teeth through milk...
Latest page update: made by ChristineLung
, Oct 19 2006, 11:41 AM EDT
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