1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
1.6 CAS Number
74401997440177
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- Samarium metals helps stimulating body metabolism.
- Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.
- Rubidium metal is 16th most common element found in the earth crust.
- Rubidium metal also found in minerals as well as seawater.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Obtained from Lithium Production.
2.3 History
2.3.1 Who Discovered
Lecoq de Boisbaudran
Robert Bunsen and Gustav Kirchhoff
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
5 * 10-7 %1 * 10-6 %
5E-09
0.11
2.4.2 Abundance In Sun
~0.0000001 %~0.000003 %
1E-08
0.1
2.4.3 Abundance In Meteorites
2.4.4 Abundance In Earth's Crust
2.4.5 Abundance In Oceans
2.4.6 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- Magnets of Samarium cobalt alloy are stronger than that of Iron and hence, they are used in microwave application.
- Samarium metal also used in optical lasers and infrared absorbing glasses and as a neutron absorber.
- Rubidium's main application is in the glass manufacturing.
- Rubidium can very easily get ionized and hence it is used for ion engines, but it is still less efficient than that of Caesium.
3.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
NA
3.1.2 Medical Uses
3.1.3 Other Uses
Alloys, In Nuclear Reactors
Alloys, Research Purposes
3.2 Biological Properties
3.2.1 Toxicity
3.2.2 Present in Human Body
3.2.3 In Blood
0.01 Blood/mg dm-32.49 Blood/mg dm-3
0
1970
3.2.4 In Bone
4 Physical
4.1 Melting Point
1,072.00 °C38.89 °C
27
3410
4.2 Boiling Point
1,900.00 °C688.00 °C
147
5660
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
Silvery White
Grayish White
4.3.3 Luster
4.4 Hardness
4.4.1 Mohs Hardness
4.4.2 Brinell Hardness
441.00 MPa0.22 MPa
0.14
3490
4.4.3 Vickers Hardness
4.5 Speed of Sound
2,130.00 m/s1,300.00 m/s
818
16200
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
5.3.2 Sanderson Electronegativity
5.3.3 Allred Rochow Electronegativity
5.3.4 Mulliken-Jaffe Electronegativity
5.3.5 Allen Electronegativity
5.4 Electropositivity
5.4.1 Pauling Electropositivity
5.5 Ionization Energies
5.5.1 1st Energy Level
544.50 kJ/mol403.00 kJ/mol
375.7
26130
5.5.2 2nd Energy Level
1,070.00 kJ/mol2,633.00 kJ/mol
710.2162
28750
5.5.3 3rd Energy Level
2,260.00 kJ/mol3,860.00 kJ/mol
1600
34230
5.5.4 4th Energy Level
3,990.00 kJ/mol5,080.00 kJ/mol
2780
37066
5.5.5 5th Energy Level
NA6,850.00 kJ/mol
4305.2
97510
5.5.6 6th Energy Level
NA8,140.00 kJ/mol
5715.8
105800
5.5.7 7th Energy level
NA9,570.00 kJ/mol
7226.8
114300
5.5.8 8th Energy Level
NA13,120.00 kJ/mol
8857.4
125300
5.5.9 9th Energy Level
NA14,500.00 kJ/mol
14110
134700
5.5.10 10th Energy Level
NA26,740.00 kJ/mol
17100
144300
5.5.11 11th Energy Level
5.5.12 12th Energy Level
5.5.13 13th Energy Level
5.5.14 14th Energy Level
5.5.15 15th Energy Level
5.5.16 16th Energy Level
5.5.17 17th Energy Level
5.5.18 18th Energy Level
5.5.19 19th Energy Level
5.5.20 20th Energy Level
5.5.21 21st Energy Level
5.5.22 22nd Energy Level
5.5.23 23rd Energy Level
5.5.24 24th Energy Level
5.5.25 25th Energy Level
5.5.26 26th Energy Level
5.5.27 27th Energy Level
5.5.28 28th Energy Level
5.5.29 29th Energy Level
5.5.30 30th Energy Level
5.6 Electrochemical Equivalent
1.87 g/amp-hr3.19 g/amp-hr
0.16812
8.3209
5.7 Electron Work Function
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes
Corrosion, Ionization, Radioactive Isotopes, Radioactivity
6 Atomic
6.1 Atomic Number
6.2 Electron Configuration
6.3 Crystal Structure
Rhombohedral (RHO)
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
6.4.2 Number of Neutrons
6.4.3 Number of Electrons
6.5 Radius of an Atom
6.5.1 Atomic Radius
180.00 pm248.00 pm
112
265
6.5.2 Covalent Radius
198.00 pm220.00 pm
96
260
6.5.3 Van der Waals Radius
229.00 pm303.00 pm
139
348
6.6 Atomic Weight
150.36 amu85.47 amu
6.94
294
6.7 Atomic Volume
19.95 cm3/mol55.90 cm3/mol
1.39
71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
44.80 (-eV)9.47 (-eV)
8
392.42
6.10 Lattice Constant
362.10 pm558.50 pm
228.58
891.25
6.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
6.12 Lattice C/A Ratio
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
7.52 g/cm31.53 g/cm3
0.534
40.7
7.1.2 Density When Liquid (at m.p.)
7.16 g/cm31.46 g/cm3
0.512
20
7.2 Tensile Strength
7.3 Viscosity
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
7.4.2 Vapor Pressure at 2000 K
7.5 Elasticity properties
7.5.1 Shear Modulus
7.5.2 Bulk Modulus
37.80 GPa2.50 GPa
1.6
462
7.5.3 Young's Modulus
49.70 GPa2.40 GPa
1.7
528
7.6 Poisson Ratio
7.7 Other Mechanical Properties
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
8.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
8.1.3 Permeability
8.1.4 Susceptibility
1.3 Electrical Properties
1.3.1 Electrical Property
1.3.2 Resistivity
0.94 nΩ·m128.00 nΩ·m
0.18
961
1.3.3 Electrical Conductivity
0.01 106/cm Ω0.08 106/cm Ω
0.00666
0.63
1.4.2 Electron Affinity
50.00 kJ/mol46.90 kJ/mol
0
222.8
2 Thermal
2.1 Specific Heat
0.20 J/(kg K)0.36 J/(kg K)
0.11
3.6
2.2 Molar Heat Capacity
29.54 J/mol·K31.06 J/mol·K
16.443
62.7
2.3 Thermal Conductivity
13.30 W/m·K58.20 W/m·K
6.3
429
2.4 Critical Temperature
2.6 Thermal Expansion
12.70 µm/(m·K)90.00 µm/(m·K)
4.5
97
2.8 Enthalpy
2.8.1 Enthalpy of Vaporization
166.40 kJ/mol69.20 kJ/mol
7.32
799.1
2.8.3 Enthalpy of Fusion
8.62 kJ/mol2.19 kJ/mol
2.1
35.23
2.8.5 Enthalpy of Atomization
209.00 kJ/mol82.00 kJ/mol
61.5
837
2.9 Standard Molar Entropy
69.60 J/mol.K76.80 J/mol.K
9.5
198.1