Beyond Atomic Numbers - Every Element Has a Story
40.078
2
4
S Block
Alkaline Earth Metal
Calcium was first isolated in 1808 by Sir Humphry Davy using electrolysis. However, its compounds such as limestone and gypsum have been used by humans since ancient civilizations.
Calcium is the fifth most abundant element in Earth's crust. It is found in limestone, marble, chalk, gypsum and many other minerals.
Group 2 | Period 4 | S Block | Alkaline Earth Metal
Calcium compounds are widely used in cement, plaster, steel manufacturing, agriculture, medicines and water treatment.
Oxygen, Carbon, Fluorine and Phosphorus
Calcium reacts readily with water, acids and oxygen. Pure calcium is therefore stored carefully to prevent oxidation.
Electronic Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
Calcium strengthens bones and teeth, supports muscle movement, enables blood clotting and helps nerves communicate throughout the body.
Almost 99% of the calcium in the human body is stored in bones and teeth.
Calcium is the most abundant mineral in the human body. Besides strengthening bones and teeth, it is essential for heartbeat, muscle contraction and normal nerve function.
Limestone, cement and plaster all depend on calcium compounds. Modern buildings, roads and bridges would not exist without calcium-based materials.
Calcium improves soil quality and promotes healthy plant growth. Farmers often apply lime to reduce soil acidity and improve crop yields.
Researchers study calcium signaling inside cells, advanced calcium-based biomaterials for bone repair and environmentally friendly calcium compounds for sustainable construction.
Calcium is produced in massive stars and released into space during supernova explosions. It eventually becomes part of rocky planets and living organisms.
The chemical symbol Ca comes from the Latin word Calx, meaning lime. This reflects calcium's long association with limestone and building materials.