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
74401447440042
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.
- Osmium metal does not oxidize in air unless it is heated.
- But if it heated den it forms Osmium Tetroxide, which is highly toxic.
2.3 Sources
Mining, Ores of metals
Found As a By-product, Found in Minerals, Mining
2.4 History
2.4.1 Who Discovered
Not Available
Smithson Tennant
2.4.2 Discovery
2.5 Abundance
2.5.1 Abundance In Universe
2.5.2 Abundance In Sun
~-9999 %~0.0000002 %
1E-08
0.1
2.6.1 Abundance In Meteorites
3.1.1 Abundance In Earth's Crust
3.4.2 Abundance In Oceans
3.4.3 Abundance In Humans
4 Uses
4.1 Uses & Benefits
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
-
It is used in luminous paints.
- Its has very limited uses and its alloys are very hard and are used in the manufacturing of pen tips, pivots, needles and electrical contacts.
-
It is also used as industrial catalyst to speed up the chemical reaction.
4.1.1 Industrial Uses
NA
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
4.1.2 Medical Uses
Pharmaceutical Industry
NA
4.1.3 Other Uses
4.2 Biological Properties
4.2.1 Toxicity
Highly Toxic
Highly Toxic
4.2.2 Present in Human Body
4.2.3 In Blood
4.2.4 In Bone
5 Physical
5.1 Melting Point
700.00 °C3,045.00 °C
27
3410
5.3 Boiling Point
1,737.00 °C5,027.00 °C
147
5660
5.4 Appearance
5.4.1 Physical State
5.4.2 Color
Silvery White
Silvery Bluish-Gray
5.4.3 Luster
5.5 Hardness
5.5.1 Mohs Hardness
5.6.1 Brinell Hardness
5.7.1 Vickers Hardness
5.8 Speed of Sound
5.11 Optical Properties
5.11.1 Refractive Index
5.12.1 Reflectivity
5.13 Allotropes
5.14.1 α Allotropes
Not Available
Not Available
5.14.2 β Allotropes
Not Available
Not Available
5.15.1 γ Allotropes
Not Available
Not Available
6 Chemical
6.1 Chemical Formula
6.2 Isotopes
6.2.1 Known Isotopes
7.2 Electronegativity
7.2.1 Pauling Electronegativity
7.2.3 Sanderson Electronegativity
7.3.1 Allred Rochow Electronegativity
7.4.1 Mulliken-Jaffe Electronegativity
7.5.2 Allen Electronegativity
7.6 Electropositivity
7.6.1 Pauling Electropositivity
7.8 Ionization Energies
7.8.1 1st Energy Level
509.30 kJ/mol840.00 kJ/mol
375.7
26130
7.8.2 2nd Energy Level
979.00 kJ/mol1,309.80 kJ/mol
710.2162
28750
7.8.4 3rd Energy Level
NA1,600.00 kJ/mol
1600
34230
7.8.6 4th Energy Level
7.8.0 5th Energy Level
7.9.1 6th Energy Level
8.1.2 7th Energy level
8.1.5 8th Energy Level
8.1.7 9th Energy Level
8.2.3 10th Energy Level
8.2.4 11th Energy Level
8.2.6 12th Energy Level
8.2.8 13th Energy Level
8.2.9 14th Energy Level
9.1.1 15th Energy Level
9.2.1 16th Energy Level
9.3.1 17th Energy Level
9.3.2 18th Energy Level
9.4.1 19th Energy Level
9.5.1 20th Energy Level
9.5.2 21st Energy Level
9.6.2 22nd Energy Level
9.6.3 23rd Energy Level
9.6.4 24th Energy Level
9.6.6 25th Energy Level
9.6.7 26th Energy Level
9.6.9 27th Energy Level
9.6.10 28th Energy Level
9.7.1 29th Energy Level
9.7.2 30th Energy Level
9.8 Electrochemical Equivalent
4.22 g/amp-hr1.77 g/amp-hr
0.16812
8.3209
9.9 Electron Work Function
9.10 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Chemical Stability, Ionization, Solubility
10 Atomic
10.1 Atomic Number
10.2 Electron Configuration
[Rn] 7s2
[Xe] 4f14 5d6 6s2
10.3 Crystal Structure
Body Centered Cubic (BCC)
Hexagonal Close Packed (HCP)
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
10.4.2 Number of Neutrons
10.4.3 Number of Electrons
10.5 Radius of an Atom
10.5.1 Atomic Radius
10.5.2 Covalent Radius
10.5.3 Van der Waals Radius
283.00 pm216.00 pm
139
348
10.6 Atomic Weight
226.00 amu190.23 amu
6.94
294
10.7 Atomic Volume
45.20 cm3/mol8.49 cm3/mol
1.39
71.07
10.8 Adjacent Atomic Numbers
10.8.1 Previous Element
10.8.2 Next Element
10.9 Valence Electron Potential
20.10 (-eV)91.40 (-eV)
8
392.42
10.10 Lattice Constant
514.80 pm273.44 pm
228.58
891.25
10.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
10.12 Lattice C/A Ratio
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
5.50 g/cm322.59 g/cm3
0.534
40.7
11.1.2 Density When Liquid (at m.p.)
11.2 Tensile Strength
11.3 Viscosity
11.4 Vapor Pressure
11.4.1 Vapor Pressure at 1000 K
11.4.2 Vapor Pressure at 2000 K
11.5 Elasticity properties
11.5.1 Shear Modulus
11.5.2 Bulk Modulus
11.5.3 Young's Modulus
11.6 Poisson Ratio
11.7 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·m81.20 nΩ·m
0.18
961
12.2.3 Electrical Conductivity
NA0.11 106/cm Ω
0.00666
0.63
12.2.4 Electron Affinity
13 Thermal
13.1 Specific Heat
0.12 J/(kg K)0.13 J/(kg K)
0.11
3.6
13.2 Molar Heat Capacity
NA24.70 J/mol·K
16.443
62.7
13.3 Thermal Conductivity
18.60 W/m·K87.60 W/m·K
6.3
429
13.4 Critical Temperature
13.5 Thermal Expansion
13.6 Enthalpy
13.6.1 Enthalpy of Vaporization
NA627.60 kJ/mol
7.32
799.1
13.6.2 Enthalpy of Fusion
13.6.3 Enthalpy of Atomization
163.00 kJ/mol669.00 kJ/mol
61.5
837
13.7 Standard Molar Entropy
71.00 J/mol.K32.60 J/mol.K
9.5
198.1