Calcium - Wikipedia
Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its …
Calcium - Element information, properties and uses | Periodic Table
Element Calcium (Ca), Group 2, Atomic Number 20, s-block, Mass 40.078. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Calcium | Definition, Properties, & Compounds | Britannica
2025年1月12日 · calcium (Ca), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table. It is the most abundant metallic element in the human body and the fifth most abundant element in Earth’s crust.
Calcium | Ca (Element) - PubChem
Calcium is a chemical element with symbol Ca and atomic number 20. Classified as a n alkaline earth metal, Calcium is a solid at room temperature. J.C. Slater, J Chem Phys, 1964, 41 (10), 3199-3205. DOI:10.1063/1.1725697.
Calcium Element | History, Uses, Facts, Physical Chemical …
Calcium is an alkaline earth metal and has been known since prehistoric times. It was discovered in 1787 by Antoine Lavoisier and was isolated in pure form in 1808. Calcium is important nutrient for the human body.
Calcium Facts – Atomic Number 20 and Element Symbol Ca
2015年6月5日 · Calcium is the 20 th element of the periodic table. These calcium facts contain chemical and physical data along with general information and history. Basic Calcium Facts. Name: Calcium. Atomic Number: 20. Element Symbol: Ca. Group: 2. Period: 4. Block: s. Element Family: Alkaline Earth. Atomic Mass: 40.078 (4) Discovery: Sir Humphry Davy in 1808.
Calcium Element Facts - chemicool.com
Calcium is the most abundant of the metallic elements in the human body. The average adult body contains about 1 kg or 2 lb of calcium, 99% of which is in the bones and teeth. Only oxygen, carbon, hydrogen and nitrogen are more abundant in our bodies than calcium.
Calcium (Ca) - Periodic Table
Calcium is a chemical element of the periodic table with chemical symbol Ca and atomic number 20 with an atomic weight of 40.0784 u and is classed as alkaline earth metal and is part of group 3 (scandium group). Calcium is solid at room temperature.
Calcium: Element, Properties, Facts and Uses - GeeksforGeeks
2024年3月4日 · Calcium is a chemical element with the symbol Ca and atomic number 20. It is an essential mineral for living organisms, including humans, and is one of the most abundant minerals in the human body. Learn more about calcium, its data, properties, uses and examples
Calcium Facts, Symbol, Discovery, Properties, Uses - Chemistry …
Calcium (pronunciation KAL-see-em [2]), represented by the chemical symbol or formula Ca [1], is a soft element belonging to the family of alkali earth metals [3]. Naturally occurring Ca is a mixture of 6 isotopes with mass numbers 40, 42, 43, 44, 46 and 48 [1, 3] .