Periodic Table of Elements showing actinide elements


Atomic Number85
Molar Mass210 gmol-1
Electron Configuration[Xe]4f145d106s26p5
Normal Statesolid nonmetal
Density @STPg cm-3
Melting Point302oC
Boiling Point337oC
Stable Isotopesnone
Atomic Radiuspm
Ionic Radius227 (1-) pm
Electronegativity (Pauling)2
Ionization Energy (1st)930 kJ mol-1
Ionization Energy (2nd)1600 kJ mol-1
Ionization Energy (3rd)2900 kJ mol-1
Molar Heat CapacityJ K-1mol-1
Standard Molar EntropyJ K-1mol-1
Enthalpy of Fusion23.8 kJ mol-1
Enthalpy of Vapourization100.8 kJ mol-1
[Back to Periodic table]

Gordon England Surface Engineering Forum

Gordon England Independent Thermal Spray Coating Consultant
Telephone: +44 (0)1252 405186


Site Links


Nature of Thermal Spray Coatings

Surface Engineering in a Nutshell

Surface Engineering Forum

Thermal Spray Gun Repair Service

Plasma Consumable Parts

Thermal Spray Powder Supplies


Thermal Spray Coatings on Carbon and Glass Fibre Reinforced Polymers

HVOF Coating of Paper Making Roll

Abradable Coatings


Thermal Spray Processes:

Combustion Wire Thermal Spray Process

Combustion Powder Thermal Spray Process

Arc Wire Thermal Spray Process

Plasma Thermal Spray Process

HVOF Thermal Spray Process

HVAF Thermal Spray Process

Detonation Thermal Spray Process

Plasma Flame Theory

Cold Spray Coating Process

Wear and Use of Thermal Spray Coatings

Corrosion and Use of Thermal Spray Coatings

Glossary of Thermal Spray and Surface Engineering Terms

Image Directory for Thermal Spray Coatings

Plasma Gas Flow Information

Plasma Gas Flow Correction Calculator

Contact Form

Links to other interesting sites related to thermal spray and surface engineering

Reciprocal Links

Periodic Table of the Elements

SI Units

Calculators for Conversion between Units of Measurement

Hardness Testing

Surface Engineering Message Board Archive

Surface Engineering Message Board Archive Index

Photography Gallery2

Photography Gallery3

© Copyright Gordon England