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Radium Radium Comparison

Radium
Radium
Radium Radium comparison


Periodic Table
Symbol
Ra   
Ra   
Group Number
2   
16
2   
16
Period Number
7   
7   
Block
s block   
s block   
Element Family
Alkaline Earth   
Alkaline Earth   
CAS Number
7440144   
99+
7440144   
99+
Space Group Name
Im_ 3m   
Im_ 3m   
Space Group Number
229.00   
1
229.00   
1
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.
  
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  
Sources
Mining, Ores of metals   
Mining, Ores of metals   
History
  
  
Who Discovered
Not Available   
Not Available   
Discovery
In 1898   
In 1898   
Abundance
  
  
Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
99+
Abundance In Oceans
0.00 %   
99+
0.00 %   
99+
Abundance In Humans
0.00 %   
20
0.00 %   
20
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.
  
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  
Industrial Uses
NA   
NA   
Medical Uses
Pharmaceutical Industry   
Pharmaceutical Industry   
Other Uses
NA   
NA   
Biological Properties
  
  
Toxicity
Highly Toxic   
Highly Toxic   
Present in Human Body
No   
No   
Physical Properties
Melting Point
700.00 °C   
99+
700.00 °C   
99+
Boiling Point
1,737.00 °C   
99+
1,737.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Silvery White   
Luster
Metallic   
Metallic   
Hardness
  
  
Speed of Sound
Not Available   
Not Available   
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   
Ra   
Isotopes
  
  
Known Isotopes
33   
6
33   
6
Electronegativity
  
  
Pauling Electronegativity
0.90   
99+
0.90   
99+
Allred Rochow Electronegativity
0.97   
38
0.97   
38
Mulliken-Jaffe Electronegativity
0.92   
20
0.92   
20
Allen Electronegativity
0.89   
99+
0.89   
99+
Electropositivity
  
  
Pauling Electropositivity
3.10   
5
3.10   
5
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol   
99+
509.30 kJ/mol   
99+
2nd Energy Level
979.00 kJ/mol   
99+
979.00 kJ/mol   
99+
Electrochemical Equivalent
4.22 g/amp-hr   
6
4.22 g/amp-hr   
6
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Radioactivity   
Atomic Properties
Atomic Number
88   
30
88   
30
Electron Configuration
[Rn] 7s2   
[Rn] 7s2   
Crystal Structure
Body Centered Cubic (BCC)   
Body Centered Cubic (BCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
88   
30
88   
30
Number of Neutrons
138   
16
138   
16
Number of Electrons
88   
30
88   
30
Radius of an Atom
  
  
Covalent Radius
221.00 pm   
3
221.00 pm   
3
Van der Waals Radius
283.00 pm   
4
283.00 pm   
4
Atomic Weight
226.00 amu   
26
226.00 amu   
26
Atomic Volume
45.20 cm3/mol   
4
45.20 cm3/mol   
4
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Francium
  
Next Element
Actinium
  
Actinium
  
Valence Electron Potential
20.10 (-eV)   
99+
20.10 (-eV)   
99+
Lattice Constant
514.80 pm   
13
514.80 pm   
13
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
5.50 g/cm3   
99+
5.50 g/cm3   
99+
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Elasticity properties
  
  
Poisson Ratio
Not Available   
Not Available   
Other Mechanical Properties
NA   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
5.00   
99+
5.00   
99+
Magnetic Ordering
Nonmagnetic   
Nonmagnetic   
Electrical Properties
  
  
Electrical Property
NA   
NA   
Resistivity
100.00 nΩ·m   
31
100.00 nΩ·m   
31
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.12 J/(kg K)   
40
Molar Heat Capacity
Not Available   
Not Available   
Thermal Conductivity
18.60 W/m·K   
99+
18.60 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
Not Available   
Not Available   
Enthalpy
  
  
Enthalpy of Atomization
163.00 kJ/mol   
99+
163.00 kJ/mol   
99+
Standard Molar Entropy
71.00 J/mol.K   
14
71.00 J/mol.K   
14
Summary >>
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