Ca20 – Calcium
- Atomic Number20
- Atomic SymbolCa
- Atomic NameCalcium
- Atomic Mass40.08
- CPK Hex Color3DFF00
- Electron Configuration[Ar]4s2
- Electron Negativity1
- Atomic Radius231
- Ionization Energy6.113
- Electron Affinity
- Oxidation States2
- Standard StateSolid
- Melting Point1115
- Boiling Point1757
- Density1.54
- Group BlockAlkaline earth metal
- Year DiscoveredAncient
Periodic Table of Elements. (2022, December 23). In PubChem and the National Library of Medicine. https://pubchem.ncbi.nlm.nih.gov/periodic-table/#view=table