Ca20 – Calcium
- Atomic Number: 20
- Atomic Symbol: Ca
- Atomic Name: Calcium
- Atomic Mass: 40.08
- CPK Hex Color: 3DFF00
- Electron Configuration: [Ar]4s2
- Electron Negativity: 1
- Atomic Radius: 231
- Ionization Energy: 6.113
- Electron Affinity:
- Oxidation States: 2
- Standard State: Solid
- Melting Point: 1115
- Boiling Point: 1757
- Density: 1.54
- Group Block: Alkaline earth metal
- Year Discovered: Ancient
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