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
74404397440177
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- Naturally occurring minor elements include Cadmium.
- Cadmium is released into atmosphere to control volcanic eruption and forest fires.
- It is used for electroplating of Steel for corrosion resistance.
- It can absorb neutrons and used in nuclear reactor to control atomic fission.
- 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 As a By-product, Found in Minerals, Mining
Obtained from Lithium Production.
2.3 History
2.3.1 Who Discovered
Karl Samuel Leberecht Hermann and Friedrich Stromeyer
Robert Bunsen and Gustav Kirchhoff
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2 * 10-7 %1 * 10-6 %
5E-09
0.11
2.4.2 Abundance In Sun
~0.0000006 %~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
- It has very limited uses as it is a toxic metal and it can cause birth defects, cancer, etc.
-
Almost 80% of Cadmium metal is used in Nickel cadmium Batteries and now it is getting replaced with nickel hydride.
- 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, Ammunition Industry, Chemical Industry, Electrical Industry, Electronic Industry
NA
3.1.2 Medical Uses
3.1.3 Other Uses
Alloys
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
1.80 p.p.m.5.00 p.p.m.
0
170000
4 Physical
4.1 Melting Point
320.90 °C38.89 °C
27
3410
4.2 Boiling Point
765.00 °C688.00 °C
147
5660
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
Silvery Bluish-Gray
Grayish White
4.3.3 Luster
4.4 Hardness
4.4.1 Mohs Hardness
4.4.2 Brinell Hardness
203.00 MPa0.22 MPa
0.14
3490
4.4.3 Vickers Hardness
4.5 Speed of Sound
2,310.00 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
867.80 kJ/mol403.00 kJ/mol
375.7
26130
5.5.2 2nd Energy Level
1,631.40 kJ/mol2,633.00 kJ/mol
710.2162
28750
5.5.3 3rd Energy Level
3,616.00 kJ/mol3,860.00 kJ/mol
1600
34230
5.5.4 4th Energy Level
NA5,080.00 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
2.10 g/amp-hr3.19 g/amp-hr
0.16812
8.3209
5.7 Electron Work Function
5.8 Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
Corrosion, Ionization, Radioactive Isotopes, Radioactivity
6 Atomic
6.1 Atomic Number
6.2 Electron Configuration
6.3 Crystal Structure
Hexagonal Close Packed (HCP)
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
151.00 pm248.00 pm
112
265
6.5.2 Covalent Radius
144.00 pm220.00 pm
96
260
6.5.3 Van der Waals Radius
158.00 pm303.00 pm
139
348
6.6 Atomic Weight
112.41 amu85.47 amu
6.94
294
6.7 Atomic Volume
13.10 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
30.00 (-eV)9.47 (-eV)
8
392.42
6.10 Lattice Constant
297.94 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
8.65 g/cm31.53 g/cm3
0.534
40.7
7.1.2 Density When Liquid (at m.p.)
8.00 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
42.00 GPa2.50 GPa
1.6
462
7.5.3 Young's Modulus
50.00 GPa2.40 GPa
1.7
528
7.6 Poisson Ratio
7.7 Other Mechanical Properties
Ductile, Malleable
Ductile
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
8.1.2 Magnetic Ordering
8.1.3 Permeability
8.1.4 Susceptibility
8.2 Electrical Properties
8.2.1 Electrical Property
8.2.2 Resistivity
72.70 nΩ·m128.00 nΩ·m
0.18
961
8.2.3 Electrical Conductivity
0.14 106/cm Ω0.08 106/cm Ω
0.00666
0.63
8.2.4 Electron Affinity
0.00 kJ/mol46.90 kJ/mol
0
222.8
9 Thermal
9.1 Specific Heat
0.23 J/(kg K)0.36 J/(kg K)
0.11
3.6
9.2 Molar Heat Capacity
26.02 J/mol·K31.06 J/mol·K
16.443
62.7
9.3 Thermal Conductivity
96.60 W/m·K58.20 W/m·K
6.3
429
9.4 Critical Temperature
9.5 Thermal Expansion
30.80 µm/(m·K)90.00 µm/(m·K)
4.5
97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
100.00 kJ/mol69.20 kJ/mol
7.32
799.1
9.6.2 Enthalpy of Fusion
6.19 kJ/mol2.19 kJ/mol
2.1
35.23
9.6.3 Enthalpy of Atomization
113.00 kJ/mol82.00 kJ/mol
61.5
837
9.7 Standard Molar Entropy
51.80 J/mol.K76.80 J/mol.K
9.5
198.1