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Protactinium
91
Pa
231.036
Atomic Number 91
Atomic Weight 231.036
Electron Config. 2-2-6-2-6-10-2-6-10-14-2-6-10-2-2-6-1-2
Electron configuration order: 1s-2s-2p-3s-3p-3d-4s-4p-4d-4f-5s-5p-5d-5f-6s-6p-6d-7s

Mechanical Properties Conditions
Phase Temp. (K) Pressure (Pa)
Density 15400 kg/m3 Solid  298.15 

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 1845.15 K   101325 
Boiling Temperature 4300 K   101325 
Fusion Enthalpy 53.4 J/g 101325 
 
Glossary
STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.