Atomic NumberAtomic Number 55
Atomic Number 55 is belong to element of Caesium.
Chemical symbol for Caesium is Cs. Number of protons in Caesium is 55. Atomic weight of Caesium is 132.905452 u or g/mol.
55Cs
Atomic Number 55 Element Properties
| Atomic Number (Z) | 55 |
|---|---|
| Atomic Symbol | Cs |
| Element Name | Caesium |
| Group | 1 |
| Period | 6 |
| Atomic Weight | 132.905452 u |
| Density | 1.873 g/cm3 |
| Melting Point (K) | 301.59 K |
| Boiling Point (K) | 944 K |
List all properties of Caesium