Uranium vs Gold
Periodic Table
Symbol
U
Au
Group Number
0
18
11
7
Period Number
7
6
Block
f block
d block
Element Family
Actinide
Transition Metal
CAS Number
7440611
28
7440575
31
Space Group Name
Cmcm
Fm_ 3m
Space Group Number
63.00
10
225.00
2
Facts
Interesting Facts
- Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
- It is found in copper ores and from the crust of the earth.
- It is the most malleable and ductile metal.
- Gold alloys are used in Dentistry as fillings, crowning, clips, etc. It is also used as an artificial limb joints.
Sources
Earth's crust, Mining, Ores of Minerals
Earth's crust, Mining, Ores of metals
History
Who Discovered
Not Available
Unknown
Discovery
In 1789
Before 6000 BCE
Abundance
Abundance In Universe
2 * 10-8 %
29
6 * 10-8 %
26
Abundance In Sun
~0.0000001 %
26
~0.0000001 %
26
Abundance In Meteorites
0.00 %
99+
0.00 %
99+
Abundance In Earth's Crust
0.00 %
36
0.00 %
99+
Abundance In Oceans
0.00 %
11
0.00 %
21
Abundance In Humans
Not Available
0.00 %
18
Uses
Uses & Benefits
- The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
- Synthetic elements like transuranium are made from Uranium metal.
- Gold metal is mainly used for Jewelry, bullion, coinage, etc.
- It is used in the art, decoration, ornaments, etc. It is also used for electroplating process.
Industrial Uses
Ammunition Industry, Chemical Industry
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry
Medical Uses
NA
Dentistry, Pharmaceutical Industry
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
Biological Properties
Toxicity
Toxic
Non Toxic
Present in Human Body
No
Yes
In Blood
Not Available
0.00 Blood/mg dm-3
35
In Bone
Not Available
0.02 p.p.m.
30
Physical Properties
Melting Point
1,132.00 °C
39
1,064.43 °C
99+
Boiling Point
3,818.00 °C
16
2,807.00 °C
36
Appearance
Physical State
Solid
Solid
Color
Silvery Gray
Gold
Luster
Metallic
Metallic
Hardness
Mohs Hardness
6.00
6
2.50
14
Brinell Hardness
2,350.00 MPa
2
194.00 MPa
99+
Vickers Hardness
1,960.00 MPa
2
216.00 MPa
31
Speed of Sound
3,155.00 m/s
25
2,030.00 m/s
99+
Optical Properties
Reflectivity
Not Available
95.00 %
2
Allotropes
No
No
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Chemical Properties
Chemical Formula
U
Au
Isotopes
Known Isotopes
25
14
36
3
Electronegativity
Pauling Electronegativity
1.38
28
2.54
1
Allred Rochow Electronegativity
1.22
26
1.42
18
Mulliken-Jaffe Electronegativity
Not Available
1.87
7
Allen Electronegativity
Not Available
1.92
5
Electropositivity
Pauling Electropositivity
2.62
26
1.46
99+
Ionization Energies
1st Energy Level
597.60 kJ/mol
99+
890.10 kJ/mol
8
2nd Energy Level
1,420.00 kJ/mol
99+
1,980.00 kJ/mol
12
3rd Energy Level
1,900.00 kJ/mol
99+
Not Available
4th Energy Level
3,145.00 kJ/mol
99+
Not Available
Electrochemical Equivalent
1.48 g/amp-hr
99+
2.45 g/amp-hr
21
Electron Work Function
3.63 eV
30
5.10 eV
4
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Chemical Stability, Ionization, Solubility
Atomic Properties
Atomic Number
92
26
79
37
Electron Configuration
[Rn] 5f3 6d1 7s2
[Xe] 4f14 5d10 6s1
Crystal Structure
Orthorhombic (ORTH)
Face Centered Cubic (FCC)
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100
FCC-Crystal-Structure-of-Gold.jpg#100
Atom
Number of Protons
92
26
79
37
Number of Neutrons
146
13
118
23
Number of Electrons
92
26
79
37
Radius of an Atom
Atomic Radius
156.00 pm
29
151.00 pm
32
Covalent Radius
196.00 pm
14
144.00 pm
40
Van der Waals Radius
186.00 pm
33
166.00 pm
39
Atomic Weight
238.03 amu
21
196.97 amu
33
Atomic Volume
12.59 cm3/mol
40
10.20 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
170.00 (-eV)
4
43.40 (-eV)
99+
Lattice Constant
295.08 pm
99+
407.82 pm
21
Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
1.61
4
Mechanical Properties
Density
Density At Room Temperature
19.10 g/cm3
17
19.30 g/cm3
15
Density When Liquid (at m.p.)
17.30 g/cm3
7
17.31 g/cm3
6
Tensile Strength
Not Available
120.00 MPa
15
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
0.00 (Pa)
23
Vapor Pressure at 2000 K
0.01 (Pa)
20
67.00 (Pa)
4
Elasticity properties
Shear Modulus
111.00 GPa
10
27.00 GPa
27
Bulk Modulus
100.00 GPa
16
180.00 GPa
9
Young's Modulus
208.00 GPa
10
79.00 GPa
24
Poisson Ratio
0.23
30
0.40
4
Other Mechanical Properties
Ductile, Malleable
Ductile, Malleable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
18.80
10
19.32
8
Magnetic Ordering
Paramagnetic
Diamagnetic
Electrical Properties
Electrical Property
Poor Conductor
Conductor
Resistivity
0.28 nΩ·m
99+
2.20 nΩ·m
99+
Electrical Conductivity
0.04 106/cm Ω
37
0.45 106/cm Ω
3
Electron Affinity
Not Available
222.80 kJ/mol
1
Thermal Properties
Specific Heat
0.12 J/(kg K)
40
0.13 J/(kg K)
39
Molar Heat Capacity
27.67 J/mol·K
15
25.42 J/mol·K
40
Thermal Conductivity
27.50 W/m·K
40
318.00 W/m·K
3
Critical Temperature
Not Available
Not Available
Thermal Expansion
13.90 µm/(m·K)
27
14.20 µm/(m·K)
26
Enthalpy
Enthalpy of Vaporization
477.00 kJ/mol
13
324.40 kJ/mol
27
Enthalpy of Fusion
15.48 kJ/mol
19
12.55 kJ/mol
27
Enthalpy of Atomization
489.50 kJ/mol
14
364.00 kJ/mol
25
Standard Molar Entropy
50.20 J/mol.K
31
47.40 J/mol.K
32
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