The Element Radium
Radium in its pure metallic form is white in color however upon exposure to air it immediately turns in to black due to oxidation. It is an alkaline earth metal that is found in trace amounts in uranium ores and is extremely radioactive. Being the heaviest of the alkaline earth metals, radium resembles chemical behavior of barium in many forms.
The special characteristic of radium is that it always attempts to keep them warmer than the outside temperature with the helps of its radiation. Thus, their radiation patterns can be classified in to three categories such as alpha particles, beta particles, and gamma rays.
Atomic Number & Chemical Properties
Element Basics:
Chemical Symbol: Ra
Atomic Number: 88
Atomic Weight: 226.0254
Element Classification: Alkaline-earth Metal
Discovered By: Pierre and Marie Curie-Sklodowska
Date of Discovery: 1898 (France/Poland)
Origin of Name: Latin: radius (ray).
How to Recognize it at a Party:
Silvery white, radioactive element
Seriously Atomic Information:
Density (g/cc): (5.5)
Melting Point (°K): 973
Boiling Point (°K): 1413
Atomic Radius (pm): n/a
Atomic Volume (cc/mol): 45.0
Covalent Radius (pm): n/a
Ionic Radius: 143 (+2e)
Pauling Negativity Number: 0.9
First Ionizing Energy (kJ/mol): 509.0
Oxidation States: 2
Electronic Configuration: [Rn] 7s2
Getting Intimate with Radium:
Lattice Structure: n/a
Lattice Constant (Å): n/a
Lattice C/A Ratio: n/a
Specific Heat (@20°C J/g mol): 0.120
Fusion Heat (kJ/mol): (9.6)
Evaporation Heat (kJ/mol): (113)
Thermal Conductivity (@25°C W/m K):
Debye Temperature (°K): n/a
Society's Questions About Radium:
Have you ever wondered what everyone else in the world thinks about Radium? Is anyone else looking for it too? If so, why? What do they want?
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