1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
Alkaline Earth
Transition Metal
1.6 CAS Number
74401447439976
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 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.
- At room temperature mercury is found in a liquid state.
- A coin of pound or rupees floats in mercury.
- Because of its low melting point and boiling point it is used in thermometers.
2.2 Sources
Mining, Ores of metals
Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Not Available
Ancient Chinese and Indians
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.4.3 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
2.4.4 Abundance In Meteorites
2.4.6 Abundance In Earth's Crust
2.4.8 Abundance In Oceans
2.4.10 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
-
It is used in luminous paints.
- It is a liquid metal at room temperature, but it is a toxic heavy metal and hence many uses of mercury are under review or phased out.
- It is manly used as a catalysts in chemical industry.
3.1.1 Industrial Uses
NA
Electrical Industry, Electronic Industry
3.1.2 Medical Uses
Pharmaceutical Industry
Dentistry
3.1.3 Other Uses
NA
Alloys, Mirror Manufacturing, Pharmaceutical Industry
3.2 Biological Properties
3.2.1 Toxicity
Highly Toxic
Highly Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
NA0.01 Blood/mg dm-3
0
1970
3.2.4 In Bone
4 Physical
4.1 Melting Point
4.2 Boiling Point
1,737.00 °C356.58 °C
147
5660
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
4.3.3 Luster
4.4 Hardness
4.4.1 Mohs Hardness
4.4.4 Brinell Hardness
4.4.6 Vickers Hardness
4.5 Speed of Sound
4.6 Optical Properties
4.6.1 Refractive Index
4.6.2 Reflectivity
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
5.2 Isotopes
5.2.1 Known Isotopes
5.3 Electronegativity
5.3.1 Pauling Electronegativity
5.3.3 Sanderson Electronegativity
5.3.6 Allred Rochow Electronegativity
5.3.8 Mulliken-Jaffe Electronegativity
5.3.10 Allen Electronegativity
5.5 Electropositivity
5.5.1 Pauling Electropositivity
5.7 Ionization Energies
5.7.1 1st Energy Level
509.30 kJ/mol1,007.10 kJ/mol
375.7
26130
5.7.2 2nd Energy Level
979.00 kJ/mol1,810.00 kJ/mol
710.2162
28750
6.1.1 3rd Energy Level
NA3,300.00 kJ/mol
1600
34230
6.3.1 4th Energy Level
6.4.2 5th Energy Level
6.4.4 6th Energy Level
6.4.5 7th Energy level
6.4.7 8th Energy Level
6.4.8 9th Energy Level
6.5.2 10th Energy Level
6.5.4 11th Energy Level
6.5.6 12th Energy Level
6.6.1 13th Energy Level
6.7.1 14th Energy Level
6.7.2 15th Energy Level
6.9.1 16th Energy Level
6.10.1 17th Energy Level
6.10.2 18th Energy Level
6.12.1 19th Energy Level
7.1.2 20th Energy Level
7.1.3 21st Energy Level
7.1.5 22nd Energy Level
7.1.6 23rd Energy Level
7.2.1 24th Energy Level
7.2.2 25th Energy Level
7.3.1 26th Energy Level
7.4.2 27th Energy Level
7.4.3 28th Energy Level
7.4.5 29th Energy Level
7.4.6 30th Energy Level
7.6 Electrochemical Equivalent
4.22 g/amp-hr3.74 g/amp-hr
0.16812
8.3209
7.7 Electron Work Function
7.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Flammability, Ionization, Solubility
8 Atomic
8.1 Atomic Number
8.2 Electron Configuration
[Rn] 7s2
[Xe] 4f14 5d10 6s2
8.3 Crystal Structure
Body Centered Cubic (BCC)
Rhombohedral (RHO)
8.3.1 Crystal Lattice
8.4 Atom
8.4.1 Number of Protons
8.5.1 Number of Neutrons
8.5.2 Number of Electrons
9.2 Radius of an Atom
9.2.1 Atomic Radius
9.2.5 Covalent Radius
221.00 pm132.00 pm
96
260
9.3.3 Van der Waals Radius
283.00 pm155.00 pm
139
348
9.4 Atomic Weight
226.00 amu200.59 amu
6.94
294
9.5 Atomic Volume
45.20 cm3/mol14.82 cm3/mol
1.39
71.07
9.6 Adjacent Atomic Numbers
9.6.1 Previous Element
9.6.2 Next Element
9.7 Valence Electron Potential
20.10 (-eV)28.20 (-eV)
8
392.42
10.2 Lattice Constant
514.80 pm300.50 pm
228.58
891.25
10.4 Lattice Angles
10.5 Lattice C/A Ratio
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
5.50 g/cm313.53 g/cm3
0.534
40.7
11.3.1 Density When Liquid (at m.p.)
11.5 Tensile Strength
11.7 Viscosity
NA0.00
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0.001526
0.001526
11.8 Vapor Pressure
11.8.1 Vapor Pressure at 1000 K
11.8.4 Vapor Pressure at 2000 K
11.9 Elasticity properties
11.9.1 Shear Modulus
11.10.1 Bulk Modulus
11.10.2 Young's Modulus
11.11 Poisson Ratio
11.12 Other Mechanical Properties
12 Magnetic
12.1 Magnetic Characteristics
12.1.1 Specific Gravity
12.1.2 Magnetic Ordering
12.1.3 Permeability
12.1.4 Susceptibility
12.2 Electrical Properties
12.2.1 Electrical Property
12.2.2 Resistivity
100.00 nΩ·m961.00 nΩ·m
0.18
961
12.2.3 Electrical Conductivity
NA0.01 106/cm Ω
0.00666
0.63
12.2.4 Electron Affinity
13 Thermal
13.1 Specific Heat
0.12 J/(kg K)0.14 J/(kg K)
0.11
3.6
13.2 Molar Heat Capacity
NA27.98 J/mol·K
16.443
62.7
13.3 Thermal Conductivity
18.60 W/m·K8.30 W/m·K
6.3
429
13.4 Critical Temperature
13.5 Thermal Expansion
13.6 Enthalpy
13.6.1 Enthalpy of Vaporization
NA56.90 kJ/mol
7.32
799.1
13.6.2 Enthalpy of Fusion
13.6.3 Enthalpy of Atomization
163.00 kJ/mol61.50 kJ/mol
61.5
837
13.7 Standard Molar Entropy
71.00 J/mol.K75.80 J/mol.K
9.5
198.1