Home
 Compare Metals

Radium vs Rhenium

Radium
Rhenium
Rhenium vs Radium


Periodic Table
Symbol
Ra  
Re  
Group Number
2  
16
7  
11
Period Number
7  
6  
Block
s block  
d block  
Element Family
Alkaline Earth  
Transition Metal  
CAS Number
7440144  
99+
7440155  
99+
Space Group Name
Im_ 3m  
P63/mmc  
Space Group Number
229.00  
1
194.00  
5
Facts
Interesting Facts
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  
  • Chemical properties of Rhenium are similar to Manganese.
  • Rhenium metal is created while refining Molybdenum.
  
Sources
Mining, Ores of metals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Not Available  
Masataka Ogawa  
Discovery
In 1898  
In 1908  
Abundance
  
  
Abundance In Universe
Not Available  
2 * 10-8 %  
29
Abundance In Sun
~-9999 %  
~0.00000001 %  
29
Abundance In Meteorites
Not Available  
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
99+
0.00 %  
34
Abundance In Humans
0.00 %  
20
Not Available  
Uses
Uses & Benefits
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  
  • Alloys of Rhenium are used as an electric contact material. It can resist withstand arc corrosion.
  • Its catalysts are used in hydrogenation of fine chemicals. Its Alloy with nickel is used to produce turbine blades.
  
Industrial Uses
NA  
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Medical Uses
Pharmaceutical Industry  
NA  
Other Uses
NA  
Alloys  
Biological Properties
  
  
Toxicity
Highly Toxic  
Low Toxic  
Present in Human Body
No  
No  
Physical Properties
Melting Point
700.00 °C  
99+
3,180.00 °C  
2
Boiling Point
1,737.00 °C  
99+
5,627.00 °C  
2
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
Not Available  
7.00  
3
Brinell Hardness
Not Available  
1,320.00 MPa  
8
Vickers Hardness
Not Available  
1,350.00 MPa  
7
Speed of Sound
Not Available  
4,700.00 m/s  
15
Optical Properties
  
  
Allotropes
No  
No  
α Allotropes
Not Available  
Not Available  
β Allotropes
Not Available  
Not Available  
γ Allotropes
Not Available  
Not Available  
Chemical Properties
Chemical Formula
Ra  
Re  
Isotopes
  
  
Known Isotopes
33  
6
33  
6
Electronegativity
  
  
Pauling Electronegativity
0.90  
99+
1.90  
11
Allred Rochow Electronegativity
0.97  
38
1.46  
15
Mulliken-Jaffe Electronegativity
0.92  
20
Not Available  
Allen Electronegativity
0.89  
99+
1.60  
21
Electropositivity
  
  
Pauling Electropositivity
3.10  
5
2.10  
99+
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol  
99+
760.00 kJ/mol  
20
2nd Energy Level
979.00 kJ/mol  
99+
1,260.00 kJ/mol  
99+
3rd Energy Level
Not Available  
2,510.00 kJ/mol  
99+
4th Energy Level
Not Available  
3,640.00 kJ/mol  
99+
Electrochemical Equivalent
4.22 g/amp-hr  
6
0.99 g/amp-hr  
99+
Electron Work Function
Not Available  
4.96 eV  
7
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic Properties
Atomic Number
88  
30
75  
99+
Electron Configuration
[Rn] 7s2  
[Xe] 4f14 5d5 6s2  
Crystal Structure
Body Centered Cubic (BCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
88  
30
75  
40
Number of Neutrons
138  
16
111  
26
Number of Electrons
88  
30
75  
40
Radius of an Atom
  
  
Atomic Radius
Not Available  
137.00 pm  
40
Covalent Radius
221.00 pm  
3
151.00 pm  
34
Van der Waals Radius
283.00 pm  
4
200.00 pm  
28
Atomic Weight
226.00 amu  
26
186.21 amu  
36
Atomic Volume
45.20 cm3/mol  
4
8.85 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Tungsten
  
Next Element
Actinium
  
Osmium
  
Valence Electron Potential
20.10 (-eV)  
99+
180.00 (-eV)  
3
Lattice Constant
514.80 pm  
13
276.10 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
Not Available  
1.62  
3
Mechanical Properties
Density
  
  
Density At Room Temperature
5.50 g/cm3  
99+
21.02 g/cm3  
12
Density When Liquid (at m.p.)
Not Available  
18.90 g/cm3  
4
Tensile Strength
Not Available  
1,070.00 MPa  
3
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available  
0.00 (Pa)  
29
Elasticity properties
  
  
Shear Modulus
Not Available  
178.00 GPa  
3
Bulk Modulus
Not Available  
370.00 GPa  
2
Young's Modulus
Not Available  
463.00 GPa  
2
Poisson Ratio
Not Available  
0.30  
14
Other Mechanical Properties
NA  
Ductile, Malleable  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
5.00  
99+
21.02  
5
Magnetic Ordering
Nonmagnetic  
Paramagnetic  
Electrical Properties
  
  
Electrical Property
NA  
Conductor  
Resistivity
100.00 nΩ·m  
31
193.00 nΩ·m  
20
Electrical Conductivity
Not Available  
0.05 106/cm Ω  
33
Electron Affinity
Not Available  
14.50 kJ/mol  
35
Thermal Properties
Specific Heat
0.12 J/(kg K)  
40
0.13 J/(kg K)  
39
Molar Heat Capacity
Not Available  
25.48 J/mol·K  
38
Thermal Conductivity
18.60 W/m·K  
99+
48.00 W/m·K  
31
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
Not Available  
6.20 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available  
707.10 kJ/mol  
3
Enthalpy of Fusion
Not Available  
33.05 kJ/mol  
2
Enthalpy of Atomization
163.00 kJ/mol  
99+
791.00 kJ/mol  
2
Standard Molar Entropy
71.00 J/mol.K  
14
36.90 J/mol.K  
99+
Periodic Table >>
<< All

Compare All Metals

All Metals

All Metals

Compare All Metals

Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!