Fermium Gold Comparison
Periodic Table
Symbol
Fm
Au
Group Number
Not Available
11
7
Period Number
7
6
Block
f block
d block
Element Family
Actinide
Transition Metal
CAS Number
7440724
19
7440575
31
Space Group Name
Not Available
Fm_ 3m
Space Group Number
Not Available
225.00
2
Facts
Interesting Facts
- Fermium metal is highly radioactive in nature.
- Fermium is synthetically produced metal.
- 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
Bombarding Pu-239 with Neutrons
Earth's crust, Mining, Ores of metals
History
Who Discovered
Lawrence Berkeley National Laboratory
Unknown
Discovery
In 1952
Before 6000 BCE
Abundance
Abundance In Universe
Not Available
6 * 10-8 %
26
Abundance In Sun
~-9999 %
~0.0000001 %
26
Abundance In Meteorites
Not Available
0.00 %
99+
Abundance In Earth's Crust
Not Available
0.00 %
99+
Abundance In Oceans
Not Available
0.00 %
21
Abundance In Humans
Not Available
0.00 %
18
Uses
Uses & Benefits
- Currently known uses of Fermium metal are limited to research purpose only.
- 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
NA
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry
Medical Uses
NA
Dentistry, Pharmaceutical Industry
Other Uses
NA
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
Biological Properties
Toxicity
Unknown
Non Toxic
Present in Human Body
No
Yes
In Blood
0.00 Blood/mg dm-3
37
0.00 Blood/mg dm-3
35
In Bone
0.00 p.p.m.
36
0.02 p.p.m.
30
Physical Properties
Melting Point
1,527.00 °C
26
1,064.43 °C
99+
Boiling Point
Not Available
2,807.00 °C
36
Appearance
Physical State
Solid
Solid
Color
Unknown
Gold
Luster
Not Defined
Metallic
Hardness
Mohs Hardness
Not Available
2.50
14
Brinell Hardness
Not Available
194.00 MPa
99+
Vickers Hardness
Not Available
216.00 MPa
31
Speed of Sound
Not Available
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
Fm
Au
Isotopes
Known Isotopes
18
21
36
3
Electronegativity
Pauling Electronegativity
1.30
32
2.54
1
Allred Rochow Electronegativity
1.20
27
1.42
18
Mulliken-Jaffe Electronegativity
Not Available
1.87
7
Allen Electronegativity
Not Available
1.92
5
Electropositivity
Pauling Electropositivity
2.70
22
1.46
99+
Ionization Energies
1st Energy Level
627.00 kJ/mol
99+
890.10 kJ/mol
8
2nd Energy Level
1,225.00 kJ/mol
99+
1,980.00 kJ/mol
12
3rd Energy Level
2,363.00 kJ/mol
99+
Not Available
4th Energy Level
3,792.00 kJ/mol
99+
Not Available
Electrochemical Equivalent
3.20 g/amp-hr
13
2.45 g/amp-hr
21
Electron Work Function
Not Available
5.10 eV
4
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Chemical Stability, Ionization, Solubility
Atomic Properties
Atomic Number
100
18
79
37
Electron Configuration
[Rn] 5f12 7s2
[Xe] 4f14 5d10 6s1
Crystal Structure
Not Known
Face Centered Cubic (FCC)
Crystal Lattice
Unknown-Crystal-Structure-of-Fermium.jpg#100
FCC-Crystal-Structure-of-Gold.jpg#100
Atom
Number of Protons
100
18
79
37
Number of Neutrons
157
7
118
23
Number of Electrons
100
18
79
37
Radius of an Atom
Atomic Radius
Not Available
151.00 pm
32
Covalent Radius
Not Available
144.00 pm
40
Van der Waals Radius
245.00 pm
9
166.00 pm
39
Atomic Weight
257.00 amu
15
196.97 amu
33
Atomic Volume
Not Available
10.20 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
Not Available
43.40 (-eV)
99+
Lattice Constant
Not Available
407.82 pm
21
Lattice Angles
NA
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
1.61
4
Mechanical Properties
Density
Density At Room Temperature
Not Available
19.30 g/cm3
15
Density When Liquid (at m.p.)
Not Available
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
Not Available
67.00 (Pa)
4
Elasticity properties
Shear Modulus
Not Available
27.00 GPa
27
Bulk Modulus
Not Available
180.00 GPa
9
Young's Modulus
Not Available
79.00 GPa
24
Poisson Ratio
Not Available
0.40
4
Other Mechanical Properties
NA
Ductile, Malleable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
Not Available
19.32
8
Magnetic Ordering
Unknown
Diamagnetic
Electrical Properties
Electrical Property
Unknown
Conductor
Resistivity
Not Available
2.20 nΩ·m
99+
Electrical Conductivity
Not Available
0.45 106/cm Ω
3
Electron Affinity
Not Available
222.80 kJ/mol
1
Thermal Properties
Specific Heat
Not Available
0.13 J/(kg K)
39
Molar Heat Capacity
Not Available
25.42 J/mol·K
40
Thermal Conductivity
Not Available
318.00 W/m·K
3
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
14.20 µm/(m·K)
26
Enthalpy
Enthalpy of Vaporization
Not Available
324.40 kJ/mol
27
Enthalpy of Fusion
Not Available
12.55 kJ/mol
27
Enthalpy of Atomization
Not Available
364.00 kJ/mol
25
Standard Molar Entropy
Not Available
47.40 J/mol.K
32
|
||
|
||
|
