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Ca
Calcium
Atomic Z: 20 · Mass A: 40
Proton (p⁺)
Neutron (n⁰)
Electron (e⁻)
Ca
Calcium
Z = 20
Mass A = 40 u · Alkaline Earth Metal
Protons (p⁺)
20 Neutrons (n⁰)
20 Electrons (e⁻)
20 Orbit Velocity1.0x
Orbit Rings
Nucleus Glow
Select Element (29)
Scientific Summary
Essential alkaline earth metal that forms bones, teeth, seashell calcium carbonate, and building cement.
Did You Know?
Calcium is the 5th most abundant element in the human body by mass!
Practical Applications
Bone & Dental Structure
Portland Cement Construction
Limestone & Marble
Steel Deoxidizer
Discovered By: Humphry DavyYear: 1808