1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.3 Block
1.4 Element Family
1.5 CAS Number
74403487440144
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
Not Available
- Radium metal is the heaviest metal of Alkaline earth metals column.
- Radium metal is highly radioactive and does not have any stable isotopes.
2.2 Sources
Obtained by Treating Radium with Neutrons, Ores of metals
Mining, Ores of metals
2.3 History
2.3.1 Who Discovered
Friedrich Oskar Giesel
Not Available
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.4.2 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
2.6.1 Abundance In Meteorites
3.4.2 Abundance In Earth's Crust
3.4.4 Abundance In Oceans
3.4.6 Abundance In Humans
4 Uses
4.1 Uses & Benefits
- Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
-
It is used in luminous paints.
4.1.1 Industrial Uses
4.1.2 Medical Uses
NA
Pharmaceutical Industry
4.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
NA
4.2 Biological Properties
4.2.1 Toxicity
4.2.2 Present in Human Body
4.2.3 In Blood
0.00 Blood/mg dm-3NA
0
1970
4.2.5 In Bone
5 Physical
5.1 Melting Point
1,227.00 °C700.00 °C
27
3410
5.2 Boiling Point
3,200.00 °C1,737.00 °C
147
5660
6.3 Appearance
6.3.1 Physical State
6.3.2 Color
Silvery White
Silvery White
6.3.3 Luster
6.4 Hardness
6.4.1 Mohs Hardness
6.4.3 Brinell Hardness
7.1.1 Vickers Hardness
7.3 Speed of Sound
7.6 Optical Properties
7.6.1 Refractive Index
7.6.2 Reflectivity
7.7 Allotropes
7.7.1 α Allotropes
Not Available
Not Available
7.7.2 β Allotropes
Not Available
Not Available
7.7.3 γ Allotropes
Not Available
Not Available
8 Chemical
8.1 Chemical Formula
8.2 Isotopes
8.2.1 Known Isotopes
8.3 Electronegativity
8.3.1 Pauling Electronegativity
8.3.2 Sanderson Electronegativity
8.4.1 Allred Rochow Electronegativity
8.5.2 Mulliken-Jaffe Electronegativity
8.5.4 Allen Electronegativity
9.3 Electropositivity
9.3.1 Pauling Electropositivity
9.5 Ionization Energies
9.5.1 1st Energy Level
499.00 kJ/mol509.30 kJ/mol
375.7
26130
9.5.3 2nd Energy Level
1,170.00 kJ/mol979.00 kJ/mol
710.2162
28750
9.5.4 3rd Energy Level
1,900.00 kJ/molNA
1600
34230
9.5.6 4th Energy Level
4,700.00 kJ/molNA
2780
37066
9.5.8 5th Energy Level
9.5.10 6th Energy Level
9.6.2 7th Energy level
9.7.2 8th Energy Level
9.7.4 9th Energy Level
9.7.5 10th Energy Level
9.7.7 11th Energy Level
9.7.9 12th Energy Level
9.7.11 13th Energy Level
9.7.14 14th Energy Level
9.7.16 15th Energy Level
9.7.18 16th Energy Level
9.7.20 17th Energy Level
9.7.21 18th Energy Level
9.7.24 19th Energy Level
9.7.26 20th Energy Level
9.7.28 21st Energy Level
9.7.30 22nd Energy Level
9.7.33 23rd Energy Level
9.7.34 24th Energy Level
9.7.36 25th Energy Level
9.7.38 26th Energy Level
9.7.40 27th Energy Level
9.7.41 28th Energy Level
9.7.43 29th Energy Level
9.7.45 30th Energy Level
9.8 Electrochemical Equivalent
2.82 g/amp-hr4.22 g/amp-hr
0.16812
8.3209
9.9 Electron Work Function
9.10 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes, Radioactivity
10 Atomic
10.1 Atomic Number
10.2 Electron Configuration
10.3 Crystal Structure
Face Centered Cubic (FCC)
Body Centered Cubic (BCC)
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
10.4.3 Number of Neutrons
10.5.1 Number of Electrons
10.6 Radius of an Atom
10.6.1 Atomic Radius
10.7.1 Covalent Radius
11.1.1 Van der Waals Radius
11.3 Atomic Weight
227.00 amu226.00 amu
6.94
294
11.6 Atomic Volume
22.54 cm3/mol45.20 cm3/mol
1.39
71.07
11.7 Adjacent Atomic Numbers
11.7.1 Previous Element
11.7.2 Next Element
11.8 Valence Electron Potential
38.60 (-eV)20.10 (-eV)
8
392.42
11.9 Lattice Constant
567.00 pm514.80 pm
228.58
891.25
11.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
11.12 Lattice C/A Ratio
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
10.00 g/cm35.50 g/cm3
0.534
40.7
12.1.3 Density When Liquid (at m.p.)
12.3 Tensile Strength
12.5 Viscosity
12.6 Vapor Pressure
12.6.1 Vapor Pressure at 1000 K
12.8.1 Vapor Pressure at 2000 K
12.10 Elasticity properties
12.10.1 Shear Modulus
12.12.1 Bulk Modulus
13.1.2 Young's Modulus
13.2 Poisson Ratio
13.4 Other Mechanical Properties
14 Magnetic
14.1 Magnetic Characteristics
14.1.1 Specific Gravity
14.2.1 Magnetic Ordering
14.2.2 Permeability
14.3.2 Susceptibility
14.4 Electrical Properties
14.4.1 Electrical Property
14.4.2 Resistivity
14.5.2 Electrical Conductivity
14.5.4 Electron Affinity
15 Thermal
15.1 Specific Heat
0.12 J/(kg K)0.12 J/(kg K)
0.11
3.6
15.2 Molar Heat Capacity
27.20 J/mol·KNA
16.443
62.7
15.4 Thermal Conductivity
12.00 W/m·K18.60 W/m·K
6.3
429
16.2 Critical Temperature
16.3 Thermal Expansion
16.5 Enthalpy
16.5.1 Enthalpy of Vaporization
16.5.3 Enthalpy of Fusion
16.5.5 Enthalpy of Atomization
301.00 kJ/mol163.00 kJ/mol
61.5
837
16.6 Standard Molar Entropy
56.50 J/mol.K71.00 J/mol.K
9.5
198.1