Atomic NumberAtomic Number 91
Atomic Number 91 is belong to element of Protactinium.
Chemical symbol for Protactinium is Pa. Number of protons in Protactinium is 91. Atomic weight of Protactinium is 231.03588 u or g/mol.
91Pa
Atomic Number 91 Element Properties
| Atomic Number (Z) | 91 |
|---|---|
| Atomic Symbol | Pa |
| Element Name | Protactinium |
| Group | |
| Period | 7 |
| Atomic Weight | 231.03588 u |
| Density | 15.37 g/cm3 |
| Melting Point (K) | 1841 K |
| Boiling Point (K) | 4300 K |
List all properties of Protactinium