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Terbium
Terbium

Beryllium
Beryllium



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Terbium Beryllium Comparison

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1 Periodic Table
1.1 Symbol
Tb
Be
1.2 Group Number
NA2
Gadolinium Metal
0 17
2.2 Period Number
62
Lithium Metal
2 7
2.6 Block
f block
s block
2.7 Element Family
Lanthanide
Alkaline Earth
2.8 CAS Number
74402797440417
Aluminium Metal
7429905 54386242
3.5 Space Group Name
P63/mmc
P63/mmc
3.7 Space Group Number
194.00194.00
Plutonium Metal
11 229
4 Facts
4.1 Interesting Facts
  • At times Terbium metal acts same as Calcium.
  • Terbium metal closely similar to Lanthanum metal.
  • Beryllium is best anti corrosion metal.
  • Beryllium is the lightest metal and still it is stronger than steel.
  • It also finds various applications in Nuclear reactors as a reflector.
4.2 Sources
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals
4.3 History
4.3.1 Who Discovered
Carl Gustaf Mosander
Louis Nicolas Vauquelin
4.3.2 Discovery
In 1842
In 1797
4.5 Abundance
4.5.1 Abundance In Universe
5 * 10-8 %1 * 10-7 %
Thallium Metal
5E-09 0.11
5.1.4 Abundance In Sun
~0.00000001 %~0.00000001 %
Palladium
1E-08 0.1
6.2.2 Abundance In Meteorites
0.00 %0.00 %
Gold Metal
1.7E-07 22
7.2.5 Abundance In Earth's Crust
0.00 %0.00 %
Radium Metal
9.9E-12 8.1
7.6.3 Abundance In Oceans
0.00 %0.00 %
Protactinium Metal
2E-23 1.1
9.2.2 Abundance In Humans
NA0.00 %
Radium Metal
1E-13 1.4
10 Uses
10.1 Uses & Benefits
  • Terbium salts are used in optical devices like laser devices.
  • Terbium’s alloy lengthens and shortens the magnetic field and this effect forms loudspeaker.
  • Its alloys with copper or nickel are used in manufacturing Gyroscopes, springs, electrical contact and non sparking tools.
  • Beryllium Alloys are used as a material for aircraft, missiles, spacecraft and satellite.
10.1.1 Industrial Uses
Electronic Industry
Aerospace Industry, Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry
10.2.0 Medical Uses
NA
NA
10.2.2 Other Uses
Alloys
Alloys
10.3 Biological Properties
10.3.1 Toxicity
Low Toxic
Toxic
10.3.2 Present in Human Body
10.3.3 In Blood
NA0.00 Blood/mg dm-3
Plutonium Metal
0 1970
10.6.3 In Bone
NA0.00 p.p.m.
Plutonium Metal
0 170000
12 Physical
12.1 Melting Point
1,356.00 °C1,278.00 °C
Francium Metal
27 3410
12.5 Boiling Point
3,123.00 °C2,970.00 °C
Flerovium Metal
147 5660
13.6 Appearance
13.6.1 Physical State
Solid
Solid
13.6.2 Color
Silvery White
White Gray
13.6.3 Luster
Metallic
Metallic
13.7 Hardness
13.7.1 Mohs Hardness
NA5.50
Cesium Metal
0.2 8.5
13.13.1 Brinell Hardness
677.00 MPa590.00 MPa
Cesium Metal
0.14 3490
14.1.1 Vickers Hardness
863.00 MPa1,670.00 MPa
Palladium Metal
121 3430
1.2 Speed of Sound
2,620.00 m/s12,890.00 m/s
Thallium Metal
818 16200
2.3 Optical Properties
2.3.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
3.1.2 Reflectivity
NANA
Molybdenum Metal
58 97
3.4 Allotropes
3.4.1 α Allotropes
Not Available
Not Available
3.4.2 β Allotropes
Not Available
Not Available
3.4.3 γ Allotropes
Not Available
Not Available
4 Chemical
4.1 Chemical Formula
Tb
Be
4.2 Isotopes
4.2.1 Known Isotopes
269
Tennessine Metal
0 38
4.7 Electronegativity
4.7.1 Pauling Electronegativity
NA1.57
Francium Metal
0.7 2.54
4.7.7 Sanderson Electronegativity
NA1.81
Cesium Metal
0.22 2.56
4.10.1 Allred Rochow Electronegativity
1.101.47
Cesium Metal
0.86 1.82
4.12.2 Mulliken-Jaffe Electronegativity
NA1.54
Cesium Metal
0.62 2.48
4.14.2 Allen Electronegativity
NA1.58
Cesium Metal
0.659 2.7
4.18 Electropositivity
4.18.1 Pauling Electropositivity
NA2.43
Gold Metal
1.46 3.3
5.2 Ionization Energies
5.2.1 1st Energy Level
603.40 kJ/mol899.50 kJ/mol
Cesium Metal
375.7 26130
5.5.3 2nd Energy Level
1,174.80 kJ/mol1,757.10 kJ/mol
Ruthenium Metal
710.2162 28750
5.5.8 3rd Energy Level
2,417.00 kJ/mol14,848.70 kJ/mol
Osmium Metal
1600 34230
5.7.5 4th Energy Level
4,203.00 kJ/mol21,006.60 kJ/mol
Thorium Metal
2780 37066
5.7.10 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
5.7.12 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
5.8.3 7th Energy level
NANA
Bohrium Metal
7226.8 114300
5.8.7 8th Energy Level
NANA
Hassium Metal
8857.4 125300
6.2.5 9th Energy Level
NANA
Yttrium Metal
14110 134700
6.3.2 10th Energy Level
NANA
Strontium Metal
17100 144300
6.7.1 11th Energy Level
NANA
Yttrium Metal
19900 169988
6.9.1 12th Energy Level
NANA
Molybdenum Metal
22219 189368
6.10.1 13th Energy Level
NANA
Molybdenum Metal
26930 76015
6.11.2 14th Energy Level
NANA
Molybdenum Metal
29196 86450
1.1.2 15th Energy Level
NANA
Manganese Metal
41987 97510
1.1.7 16th Energy Level
NANA
Iron Metal
47206 109480
1.2.4 17th Energy Level
NANA
Cobalt Metal
52737 122200
2.2.1 18th Energy Level
NANA
Nickel Metal
58570 134810
2.4.3 19th Energy Level
NANA
Copper Metal
64702 148700
2.6.1 20th Energy Level
NANA
Molybdenum Metal
80400 171200
2.8.2 21st Energy Level
NANA
Molybdenum Metal
87000 179100
3.1.3 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
3.2.4 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
3.5.3 24th Energy Level
NANA
Molybdenum Metal
104400 195200
3.6.3 25th Energy Level
NANA
Molybdenum Metal
121900 121900
3.6.7 26th Energy Level
NANA
Molybdenum Metal
127700 127700
3.6.11 27th Energy Level
NANA
Molybdenum Metal
133800 133800
3.6.15 28th Energy Level
NANA
Molybdenum Metal
139800 139800
3.6.19 29th Energy Level
NANA
Molybdenum Metal
148100 148100
1.2.2 30th Energy Level
NANA
Molybdenum Metal
154500 154500
1.4 Electrochemical Equivalent
1.98 g/amp-hr0.17 g/amp-hr
Palladium
0.16812 8.3209
1.6 Electron Work Function
3.00 eV4.98 eV
Cesium Metal
2.14 5.65
1.11 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Corrosion, Ionization, Radioactive Isotopes
2 Atomic
2.1 Atomic Number
654
Lithium Metal
3 117
2.4 Electron Configuration
[Xe] 4f9 6s2
[He] 2s2
2.5 Crystal Structure
Hexagonal Close Packed (HCP)
Hexagonal Close Packed (HCP)
2.6.2 Crystal Lattice
2.7 Atom
2.7.1 Number of Protons
654
Lithium Metal
3 117
3.1.2 Number of Neutrons
945
Lithium Metal
4 184
3.7.1 Number of Electrons
654
Lithium Metal
3 117
1.3 Radius of an Atom
1.3.1 Atomic Radius
177.00 pm112.00 pm
Palladium
112 265
1.5.2 Covalent Radius
194.00 pm96.00 pm
Palladium
96 260
1.7.3 Van der Waals Radius
221.00 pm153.00 pm
Zinc Metal
139 348
3.3 Atomic Weight
158.93 amu9.01 amu
Lithium Metal
6.94 294
4.2 Atomic Volume
19.20 cm3/mol5.00 cm3/mol
Manganese Metal
1.39 71.07
4.4 Adjacent Atomic Numbers
4.4.1 Previous Element
4.4.2 Next Element
4.5 Valence Electron Potential
46.80 (-eV)82.00 (-eV)
Francium Metal
8 392.42
4.8 Lattice Constant
360.10 pm228.58 pm
Palladium
228.58 891.25
4.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
4.12 Lattice C/A Ratio
1.581.57
Cadmium Metal
1.567 1.886
5 Mechanical
5.1 Density
5.1.1 Density At Room Temperature
8.23 g/cm31.85 g/cm3
Lithium Metal
0.534 40.7
5.5.1 Density When Liquid (at m.p.)
7.65 g/cm31.69 g/cm3
Lithium Metal
0.512 20
5.8 Tensile Strength
60.00 MPaNA
Indium Metal
2.5 11000
5.9 Viscosity
NANA
Mercury Metal
0.001526 0.001526
5.13 Vapor Pressure
5.13.1 Vapor Pressure at 1000 K
0.00 (Pa)0.00 (Pa)
Cerium Metal
2.47E-11 121
6.2.1 Vapor Pressure at 2000 K
12.50 (Pa)NA
Tungsten Metal
2.62E-10 774
6.4 Elasticity properties
6.4.1 Shear Modulus
22.10 GPa132.00 GPa
Potassium Metal
1.3 222
7.2.2 Bulk Modulus
38.70 GPa130.00 GPa
Cesium Metal
1.6 462
7.4.1 Young's Modulus
55.70 GPa287.00 GPa
Cesium Metal
1.7 528
8.5 Poisson Ratio
0.260.03
Iron
0.032 0.47
9.3 Other Mechanical Properties
Ductile, Malleable
NA
10 Magnetic
10.1 Magnetic Characteristics
10.1.1 Specific Gravity
8.231.85
Lithium Metal
0.53 4500
10.3.3 Magnetic Ordering
Paramagnetic
Diamagnetic
10.3.4 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
10.3.5 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
10.6 Electrical Properties
10.6.1 Electrical Property
Conductor
Semiconductor
10.6.2 Resistivity
1.15 nΩ·m36.00 nΩ·m
Thallium Metal
0.18 961
11.1.1 Electrical Conductivity
0.01 106/cm Ω0.31 106/cm Ω
Plutonium Metal
0.00666 0.63
11.3.1 Electron Affinity
50.00 kJ/mol0.00 kJ/mol
Mercury Metal
0 222.8
12 Thermal
12.1 Specific Heat
0.18 J/(kg K)1.82 J/(kg K)
Americium Metal
0.11 3.6
13.3 Molar Heat Capacity
28.91 J/mol·K16.44 J/mol·K
Palladium
16.443 62.7
1.3 Thermal Conductivity
11.10 W/m·K200.00 W/m·K
Neptunium Metal
6.3 429
1.6 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
1.8 Thermal Expansion
10.30 µm/(m·K)11.30 µm/(m·K)
Tungsten Metal
4.5 97
1.12 Enthalpy
1.12.1 Enthalpy of Vaporization
330.90 kJ/mol294.70 kJ/mol
Zinc Metal
7.32 799.1
1.13.3 Enthalpy of Fusion
10.80 kJ/mol11.72 kJ/mol
Cesium Metal
2.1 35.23
2.2.1 Enthalpy of Atomization
314.00 kJ/mol326.40 kJ/mol
Mercury Metal
61.5 837
1.3 Standard Molar Entropy
73.20 J/mol.K9.50 J/mol.K
Palladium
9.5 198.1