Atomic 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.


Atomic Number 91 Element Properties

Atomic Number (Z)91
Atomic SymbolPa
Element NameProtactinium
Atomic Weight231.03588 u
Density15.37 g/cm3
Melting Point (K)1841 K
Boiling Point (K)4300 K

List all properties of Protactinium