1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
2.3 Block
2.4 Element Family
Alkaline Earth
Lanthanide
2.5 CAS Number
74401447440531
7429905
54386242
2.6 Space Group Name
2.7 Space Group Number
4 Facts
4.1 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.
Not Available
4.2 Sources
Mining, Ores of metals
Found in Minerals, Mining, Ores of Minerals
4.3 History
4.3.1 Who Discovered
Not Available
Eugène-Anatole Demarçay
4.3.3 Discovery
4.4 Abundance
4.4.1 Abundance In Universe
6.2.4 Abundance In Sun
~-9999 %~0.00000005 %
1E-08
0.1
6.4.6 Abundance In Meteorites
8.1.1 Abundance In Earth's Crust
8.3.1 Abundance In Oceans
8.4.1 Abundance In Humans
9 Uses
9.1 Uses & Benefits
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
-
It is used in luminous paints.
- Europium metals main uses is in the printing of euro banknotes. These notes glow red under UV light.
-
It is used in low energy light bulbs.
9.1.1 Industrial Uses
9.1.2 Medical Uses
Pharmaceutical Industry
NA
9.1.3 Other Uses
9.2 Biological Properties
9.2.1 Toxicity
9.2.2 Present in Human Body
9.2.3 In Blood
9.3.9 In Bone
11 Physical
11.1 Melting Point
700.00 °C822.00 °C
27
3410
11.4 Boiling Point
1,737.00 °C1,597.00 °C
147
5660
11.8 Appearance
11.8.1 Physical State
11.9.2 Color
Silvery White
Silvery White
11.9.3 Luster
11.10 Hardness
11.10.1 Mohs Hardness
12.1.4 Brinell Hardness
14.6.4 Vickers Hardness
14.10 Speed of Sound
14.12 Optical Properties
14.12.1 Refractive Index
14.12.6 Reflectivity
14.14 Allotropes
14.14.2 α Allotropes
Not Available
Not Available
14.14.3 β Allotropes
Not Available
Not Available
14.14.4 γ Allotropes
Not Available
Not Available
15 Chemical
15.1 Chemical Formula
15.2 Isotopes
15.2.1 Known Isotopes
15.3 Electronegativity
15.3.1 Pauling Electronegativity
15.5.4 Sanderson Electronegativity
15.8.2 Allred Rochow Electronegativity
15.11.1 Mulliken-Jaffe Electronegativity
15.12.4 Allen Electronegativity
15.15 Electropositivity
15.15.1 Pauling Electropositivity
16.2 Ionization Energies
16.2.1 1st Energy Level
509.30 kJ/mol547.10 kJ/mol
375.7
26130
16.3.4 2nd Energy Level
979.00 kJ/mol1,085.00 kJ/mol
710.2162
28750
16.5.2 3rd Energy Level
NA2,404.00 kJ/mol
1600
34230
17.1.2 4th Energy Level
NA4,120.00 kJ/mol
2780
37066
17.2.5 5th Energy Level
17.5.6 6th Energy Level
17.6.5 7th Energy level
17.6.10 8th Energy Level
17.6.15 9th Energy Level
17.7.4 10th Energy Level
17.8.6 11th Energy Level
18.1.5 12th Energy Level
18.2.8 13th Energy Level
18.4.5 14th Energy Level
18.6.4 15th Energy Level
18.7.2 16th Energy Level
18.9.3 17th Energy Level
20.2.1 18th Energy Level
20.3.4 19th Energy Level
20.5.1 20th Energy Level
21.3.1 21st Energy Level
21.4.1 22nd Energy Level
21.10.1 23rd Energy Level
21.10.3 24th Energy Level
22.1.1 25th Energy Level
22.2.3 26th Energy Level
22.6.2 27th Energy Level
22.6.3 28th Energy Level
22.8.2 29th Energy Level
23.2.1 30th Energy Level
23.4 Electrochemical Equivalent
4.22 g/amp-hr1.89 g/amp-hr
0.16812
8.3209
24.4 Electron Work Function
24.6 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Solubility
25 Atomic
25.1 Atomic Number
25.6 Electron Configuration
25.7 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
25.7.1 Crystal Lattice
25.8 Atom
25.8.1 Number of Protons
25.11.1 Number of Neutrons
26.1.3 Number of Electrons
27.3 Radius of an Atom
27.3.1 Atomic Radius
27.7.1 Covalent Radius
221.00 pm198.00 pm
96
260
28.2.1 Van der Waals Radius
283.00 pm233.00 pm
139
348
28.6 Atomic Weight
226.00 amu151.96 amu
6.94
294
28.12 Atomic Volume
45.20 cm3/mol28.90 cm3/mol
1.39
71.07
29.5 Adjacent Atomic Numbers
29.5.1 Previous Element
29.5.2 Next Element
29.6 Valence Electron Potential
20.10 (-eV)45.60 (-eV)
8
392.42
29.8 Lattice Constant
514.80 pm458.10 pm
228.58
891.25
29.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
29.12 Lattice C/A Ratio
30 Mechanical
30.1 Density
30.1.1 Density At Room Temperature
5.50 g/cm35.26 g/cm3
0.534
40.7
30.3.1 Density When Liquid (at m.p.)
30.6 Tensile Strength
31.4 Viscosity
32.2 Vapor Pressure
32.2.1 Vapor Pressure at 1000 K
NA19.40 (Pa)
2.47E-11
121
32.2.6 Vapor Pressure at 2000 K
32.5 Elasticity properties
32.5.1 Shear Modulus
33.1.5 Bulk Modulus
33.2.4 Young's Modulus
33.3 Poisson Ratio
35.2 Other Mechanical Properties
36 Magnetic
36.1 Magnetic Characteristics
36.1.1 Specific Gravity
36.3.0 Magnetic Ordering
37.1.1 Permeability
37.3.1 Susceptibility
37.7 Electrical Properties
37.7.1 Electrical Property
37.7.2 Resistivity
100.00 nΩ·m0.90 nΩ·m
0.18
961
37.10.1 Electrical Conductivity
NA0.01 106/cm Ω
0.00666
0.63
37.13.2 Electron Affinity
38 Thermal
38.1 Specific Heat
0.12 J/(kg K)0.18 J/(kg K)
0.11
3.6
38.3 Molar Heat Capacity
NA27.66 J/mol·K
16.443
62.7
38.5 Thermal Conductivity
18.60 W/m·K13.90 W/m·K
6.3
429
38.7 Critical Temperature
38.9 Thermal Expansion
38.10 Enthalpy
38.10.1 Enthalpy of Vaporization
NA143.50 kJ/mol
7.32
799.1
38.10.2 Enthalpy of Fusion
38.10.3 Enthalpy of Atomization
163.00 kJ/mol180.00 kJ/mol
61.5
837
38.11 Standard Molar Entropy
71.00 J/mol.K77.80 J/mol.K
9.5
198.1