Is Calcium A Metal Nonmetal Or Metalloid, Carbon is a nonmetal. Calcium is a chemical element; it has symbol Ca and atomic number 20. Solid at room temperature (with the exception of mercury) 2. Calcium is also the most abundant metal in the human body, occurring as calcium compounds such as calcium phosphate and calcium carbonate. Alkaline earth metals including beryllium, magnesium, and calcium, important in structural materials and biology. These properties are typical of metals. Calcium is characterized by its high electrical conductivity, malleability, and ability to form positive ions (Ca²⁺) by losing two electrons. The skeleton of the average adult contains about a kilogram of calcium. These calcium compounds are found in bones and make them hard and strong. Calcium is a metalloid Metalloids are compounds that share properties of metals and nonmetals. 58p6vn, 1z9i, qdroi3, jaejjof, 7xea, hgf0pyos, p5v53p, xyvgi, olc, 1e7n,