1 Periodic Table
1.1 Symbol
Th
1.2 Group Number
1.3 Period Number
1.4 Block
f block
1.5 Element Family
Actinide
1.6 CAS Number
7440326
Rank: 49 (Overall) ▶
7429905
54386242
1.7 Space Group Name
P63/mmc
1.8 Space Group Number
194.00
Rank: 5 (Overall) ▶
11
229
2 Facts
2.1 Interesting Facts
- Thorium metal is used as an alternate option over Uranium for nuclear fuel.
- Thorium metals appearance (silvery white, soft) is somewhat similar to Lead metal.
2.2 Sources
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Jöns Jakob Berzelius
2.3.2 Discovery
In 1829
2.4 Abundance
2.4.1 Abundance In Universe
3 * 10-4 %
Rank: 9 (Overall) ▶
5E-09
0.11
2.4.2 Abundance In Sun
~0.0004 %
Rank: 9 (Overall) ▶
1E-08
0.1
2.4.3 Abundance In Meteorites
0.05 %
Rank: 11 (Overall) ▶
1.7E-07
22
2.4.4 Abundance In Earth's Crust
0.66 %
Rank: 7 (Overall) ▶
9.9E-12
8.1
2.4.5 Abundance In Oceans
0.00 %
Rank: 15 (Overall) ▶
2E-23
1.1
2.4.6 Abundance In Humans
Not Available
Rank: N/A (Overall) ▶
1E-13
1.4
3 Uses
3.1 Uses & Benefits
- Thorium metal is used as an allying agent for Magnesium, It imparts greater strength and resistance to temperature.
-
compound of this metal Thorium oxide is used as an industrial catalyst.
3.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
Dentistry, Surgical Instruments Manufacturing
3.1.3 Other Uses
Alloys, Jewellery, Sculptures, Statues
3.2 Biological Properties
3.2.1 Toxicity
Non Toxic
3.2.2 Present in Human Body
✔
✘
7% - Actinide Series Metals have it !
▶
3.2.3 In Blood
0.00 Blood/mg dm-3
Rank: 33 (Overall) ▶
0
1970
3.2.4 In Bone
0.02 p.p.m.
Rank: 29 (Overall) ▶
0
170000
4 Physical
4.1 Melting Point
1,750.00 °C
Rank: 17 (Overall) ▶
27
3410
4.2 Boiling Point
4,790.00 °C
Rank: 8 (Overall) ▶
147
5660
4.3 Appearance
4.3.1 Physical State
Solid
4.3.2 Color
Silver
4.3.3 Luster
NA
4.4 Hardness
4.4.1 Mohs Hardness
3.00
Rank: 12 (Overall) ▶
0.2
8.5
4.4.2 Brinell Hardness
390.00 MPa
Rank: 29 (Overall) ▶
0.14
3490
4.4.3 Vickers Hardness
295.00 MPa
Rank: 29 (Overall) ▶
121
3430
4.5 Speed of Sound
2,490.00 m/s
Rank: 36 (Overall) ▶
818
16200
4.6 Optical Properties
4.6.1 Refractive Index
Not Available
Rank: N/A (Overall) ▶
1.000933
1.7229
4.6.2 Reflectivity
Not Available
Rank: N/A (Overall) ▶
58
97
4.7 Allotropes
✔
✘
No - Actinide Series Metals has it !
▶
4.7.1 α Allotropes
Not Available
4.7.2 β Allotropes
Not Available
4.7.3 γ Allotropes
Not Available
5 Chemical
5.1 Chemical Formula
Th
5.2 Isotopes
5.2.1 Known Isotopes
5.3 Electronegativity
5.3.1 Pauling Electronegativity
1.30
Rank: 32 (Overall) ▶
0.7
2.54
5.3.2 Sanderson Electronegativity
Not Available
Rank: N/A (Overall) ▶
0.22
2.56
5.3.3 Allred Rochow Electronegativity
1.11
Rank: 29 (Overall) ▶
0.86
1.82
5.3.4 Mulliken-Jaffe Electronegativity
Not Available
Rank: N/A (Overall) ▶
0.62
2.48
5.3.5 Allen Electronegativity
Not Available
Rank: N/A (Overall) ▶
0.659
2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2.70
Rank: 22 (Overall) ▶
1.46
3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
587.00 kJ/mol
Rank: 60 (Overall) ▶
375.7
26130
5.5.2 2nd Energy Level
1,110.00 kJ/mol
Rank: 73 (Overall) ▶
710.2162
28750
5.5.3 3rd Energy Level
1,978.00 kJ/mol
Rank: 77 (Overall) ▶
1600
34230
5.5.4 4th Energy Level
2,780.00 kJ/mol
Rank: 67 (Overall) ▶
2780
37066
5.5.5 5th Energy Level
Not Available
Rank: N/A (Overall) ▶
4305.2
97510
5.5.6 6th Energy Level
Not Available
Rank: N/A (Overall) ▶
5715.8
105800
5.5.7 7th Energy level
Not Available
Rank: N/A (Overall) ▶
7226.8
114300
5.5.8 8th Energy Level
Not Available
Rank: N/A (Overall) ▶
8857.4
125300
5.5.9 9th Energy Level
Not Available
Rank: N/A (Overall) ▶
14110
134700
5.5.10 10th Energy Level
Not Available
Rank: N/A (Overall) ▶
17100
144300
5.5.11 11th Energy Level
Not Available
Rank: N/A (Overall) ▶
19900
169988
5.5.12 12th Energy Level
Not Available
Rank: N/A (Overall) ▶
22219
189368
5.5.13 13th Energy Level
Not Available
Rank: N/A (Overall) ▶
26930
76015
5.5.14 14th Energy Level
Not Available
Rank: N/A (Overall) ▶
29196
86450
5.5.15 15th Energy Level
Not Available
Rank: N/A (Overall) ▶
41987
97510
5.5.16 16th Energy Level
Not Available
Rank: N/A (Overall) ▶
47206
109480
5.5.17 17th Energy Level
Not Available
Rank: N/A (Overall) ▶
52737
122200
5.5.18 18th Energy Level
Not Available
Rank: N/A (Overall) ▶
58570
134810
5.5.19 19th Energy Level
Not Available
Rank: N/A (Overall) ▶
64702
148700
5.5.20 20th Energy Level
Not Available
Rank: N/A (Overall) ▶
80400
171200
5.5.21 21st Energy Level
Not Available
Rank: N/A (Overall) ▶
87000
179100
5.5.22 22nd Energy Level
Not Available
Rank: N/A (Overall) ▶
93400
184900
5.5.23 23rd Energy Level
Not Available
Rank: N/A (Overall) ▶
98420
198800
5.5.24 24th Energy Level
Not Available
Rank: N/A (Overall) ▶
104400
195200
5.5.25 25th Energy Level
Not Available
Rank: N/A (Overall) ▶
121900
121900
5.5.26 26th Energy Level
Not Available
Rank: N/A (Overall) ▶
127700
127700
5.5.27 27th Energy Level
Not Available
Rank: N/A (Overall) ▶
133800
133800
5.5.28 28th Energy Level
Not Available
Rank: N/A (Overall) ▶
139800
139800
5.5.29 29th Energy Level
Not Available
Rank: N/A (Overall) ▶
148100
148100
5.5.30 30th Energy Level
Not Available
Rank: N/A (Overall) ▶
154500
154500
5.6 Electrochemical Equivalent
2.16 g/amp-hr
Rank: 24 (Overall) ▶
0.16812
8.3209
5.7 Electron Work Function
3.41 eV
Rank: 32 (Overall) ▶
2.14
5.65
5.8 Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Radioactivity
6 Atomic
6.1 Atomic Number
6.2 Electron Configuration
[Rn] 6d2 7s2
6.3 Crystal Structure
Face Centered Cubic (FCC)
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
179.80 pm
Rank: 15 (Overall) ▶
112
265
6.5.2 Covalent Radius
206.00 pm
Rank: 7 (Overall) ▶
96
260
6.5.3 Van der Waals Radius
237.00 pm
Rank: 15 (Overall) ▶
139
348
6.6 Atomic Weight
232.04 amu
Rank: 23 (Overall) ▶
6.94
294
6.7 Atomic Volume
19.90 cm3/mol
Rank: 20 (Overall) ▶
1.39
71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
59.30 (-eV)
Rank: 23 (Overall) ▶
8
392.42
6.10 Lattice Constant
508.42 pm
Rank: 14 (Overall) ▶
228.58
891.25
6.11 Lattice Angles
π/2, π/2, π/2
6.12 Lattice C/A Ratio
Not Available
Rank: N/A (Overall) ▶
1.567
1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
11.72 g/cm3
Rank: 32 (Overall) ▶
0.534
40.7
7.1.2 Density When Liquid (at m.p.)
Not Available
Rank: N/A (Overall) ▶
0.512
20
7.2 Tensile Strength
Not Available
Rank: N/A (Overall) ▶
2.5
11000
7.3 Viscosity
Not Available
Rank: N/A (Overall) ▶
0.001526
0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
Not Available
Rank: N/A (Overall) ▶
2.47E-11
121
7.4.2 Vapor Pressure at 2000 K
0.00 (Pa)
Rank: 22 (Overall) ▶
2.62E-10
774
7.5 Elasticity properties
7.5.1 Shear Modulus
31.00 GPa
Rank: 21 (Overall) ▶
1.3
222
7.5.2 Bulk Modulus
54.00 GPa
Rank: 22 (Overall) ▶
1.6
462
7.5.3 Young's Modulus
79.00 GPa
Rank: 24 (Overall) ▶
1.7
528
7.6 Poisson Ratio
0.27
Rank: 20 (Overall) ▶
0.032
0.47
7.7 Other Mechanical Properties
Ductile
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
11.70
Rank: 23 (Overall) ▶
0.53
4500
8.1.2 Magnetic Ordering
Paramagnetic
8.1.3 Permeability
Not Available
Rank: N/A (Overall) ▶
1.25643E-06
0.0063
8.1.4 Susceptibility
Not Available
Rank: N/A (Overall) ▶
-0.000166
200000
8.2 Electrical Properties
8.2.1 Electrical Property
Superconductor
8.2.2 Resistivity
157.00 nΩ·m
Rank: 22 (Overall) ▶
0.18
961
8.2.3 Electrical Conductivity
0.07 106/cm Ω
Rank: 31 (Overall) ▶
0.00666
0.63
8.2.4 Electron Affinity
Not Available
Rank: N/A (Overall) ▶
0
222.8
9 Thermal
9.1 Specific Heat
0.12 J/(kg K)
Rank: 40 (Overall) ▶
0.11
3.6
9.2 Molar Heat Capacity
26.23 J/mol·K
Rank: 30 (Overall) ▶
16.443
62.7
9.3 Thermal Conductivity
54.00 W/m·K
Rank: 28 (Overall) ▶
6.3
429
9.4 Critical Temperature
Not Available
Rank: N/A (Overall) ▶
26.3
3223
9.5 Thermal Expansion
11.00 µm/(m·K)
Rank: 36 (Overall) ▶
4.5
97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
429.00 kJ/mol
Rank: 15 (Overall) ▶
7.32
799.1
9.6.2 Enthalpy of Fusion
15.48 kJ/mol
Rank: 19 (Overall) ▶
2.1
35.23
9.6.3 Enthalpy of Atomization
468.60 kJ/mol
Rank: 15 (Overall) ▶
61.5
837
9.7 Standard Molar Entropy
27.30 J/mol.K
Rank: 56 (Overall) ▶
9.5
198.1