Calcium is an atom that was added to the Periodic Table of Elements in 1808, discovered by Sir Humphrey Davy (England) It was discovered in 1787 by Antoine Lavoisier and was isolated in pure form in 1808. Calcium constitutes 3.64 percent of Earth’s crust and 8 percent of the Moon’s crust, and its cosmic abundance is estimated at 4.9 × 10 4 atoms (on a scale where the abundance of silicon is 10 6 atoms). Calcium is a chemical element with the symbol Ca and atomic number 20. Interest in the intracellular role of calcium arose 60 years later out of Kamada (Japan) and Heibrunn (USA) experiments in the early 1940s. It is the 5th most abundantly found substance in the earth’s crust and constitutes almost 3.5 percent of it. 1 decade ago. Metallic calcium was first isolated by Sir Humphry Davy in 1808 through the electrolysis of a mixture of lime (CaO) and mercuric oxide (HgO). This is an essential mineral in the human body for growth and development of bones and teeth. Calcium isn't found free in nature, but it can be purified into a soft silvery-white alkaline earth metal. Calcium is element atomic number 20 on the periodic table, which means each atom of calcium has 20 protons.It has the periodic table symbol Ca and an atomic weight of 40.078. Home / Learn / Historical Biographies. Calcium Discovery . Source(s): My own memory, as well as Wikipedia. It was later proved to be very important to animals and humans. Calcium is a chemical element that was first discovered by Sir Humphry Davy, a British Chemist, in 1808, in England.He made the discovery of Calcium by electrolyzing a mixture of lime and mercuric oxide. Maria - The element Calcium was discovered in 1808 in England by a scientist named Sir Humphrey Davy. He also discovered magnesium, barium and boron based on this electrolysis. Who Discovered the Constellation Pisces? Who Discovered Calcium? Discovery and History. The British inventor and a chemist, Sir Humphrey Davy discovered Calcium in 1808 when he electrolyzed a mix of lime and mercuric oxide. He discovered several new elements, including magnesium, calcium, strontium, and barium. Calcium is the fifth most common element on the Earth's crust. Swedish chemist Berzelius and Swedish court physician … Calcium is important nutrient for the human body. 0 0. Although calcium is the fifth most abundant element in the earth's crust, it is never found free in nature since it easily forms compounds by reacting with oxygen and water. Calcium is an alkaline earth metal and has been known since prehistoric times. Calcium is found in nature in many forms like gypsum, fluorite and limestone. Discovery Date: 1808 Discoverer: Sir Humphrey Davy [England] Name: Calcium derives its name from the Latin 'calcis' which was the word for lime (calcium oxide, CaO) and limestone (calcium carbonate, CaCO 3) History: The Romans prepared lime in the first century, but the metal was not discovered until 1808. More. He was trying to make a substance that we now call calcium amalgamate by mixing lime (also called calcium oxide - CaO) with mercuric oxide (HgO) and putting an electric current across it - a process called 'electrolysis'. Who Discovered Calcium ? As calcite (calcium carbonate), it occurs on Earth in limestone, chalk, marble, dolomite, eggshells, pearls, coral, stalactites, stalagmites, and the shells of many marine animals. The importance of calcium in muscle contraction was discovered by Sidney Ringer who reported this fact in 1883. A quick search on Wikipedia confirms this, however states that elemental Calcium, while not discovered, was isolated by Sir Humpry Davy. 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