|Group||2||Melting point||842°C, 1548°F, 1115 K|
|Period||4||Boiling point||1484°C, 2703°F, 1757 K|
|Block||s||Density (g cm−3)||1.54|
|Atomic number||20||Relative atomic mass||40.078|
|State at 20°C||Solid||Key isotopes||40Ca|
|Electron configuration||[Ar]4s2||CAS number||7440-70-2|
|ChemSpider ID||4573905||ChemSpider is a free chemical structure database|
- Calcium with the atomic number 20 is represented in the periodic table with the symbol Ca.
- Calcium (Ca) is a vital element that aids our bones stay tough and capable of supporting our load.
- Calcium is also used by our nervous system to help transmit impulses through our body.
- The element maintains the vital for bones and teeth.
- The element assists in the movement of muscles by helping to carry messages from the brain to all parts of the body.
- The ions of the element act as carriers of between cells in the form of multicellular life forms.
- The element aids in assisting hormones to release along with enzymes.
- The element is the fifth most abundant metal in the planet’s crust (4.1%).
- Traced in large amounts as gypsum (calcium sulfate), limestone (calcium carbonate), apatite (calcium chloro- or fluoro-phosphate) and fluorite (calcium fluoride).
- Dissolved calcium bicarbonate is found in hard water.
- Since before the Greeks and Romans, humans have known about calcium and compounds that contain calcium.
- Romans made use of lime in their concrete and termed it “Calx.”
- Davy was the original chemist to separate pure calcium in 1808.
- Once the element is refined, it would turn tougher as a silver-colored metal.
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