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Mendelevium Gold Comparison

Mendelevium
Gold
Gold Mendelevium comparison


Periodic Table
Symbol
Md  
Au  
Group Number
3  
15
11  
7
Period Number
7  
6  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440111  
99+
7440575  
31
Space Group Name
-  
Fm_ 3m  
Space Group Number
194.00  
7
225.00  
3
Facts
Interesting Facts
  • Mendelevium metal is synthetically produced metal.
  • Mendelevium metal has been produced in only trace amount.
  
  • 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 Einsteinium with Helium Ions  
Earth's crust, Mining, Ores of metals  
History
  
  
Who Discovered
Lawrence Berkeley National Laboratory  
-  
Discovery
In 1955  
Before 6000 BCE  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
27
Abundance In Sun
-  
0.00 %  
26
Abundance In Meteorites
0.00 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
-  
0.00 %  
99+
Abundance In Oceans
-  
0.00 %  
21
Abundance In Humans
0.00 %  
24
0.00 %  
21
Uses
Uses & Benefits
  • Currently known uses of Mendelevium 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
-  
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
Dentistry, Pharmaceutical Industry  
Other Uses
-  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
-  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
38
In Bone
0.00 p.p.m.  
99+
0.02 p.p.m.  
35
Physical
Melting Point
827.00 °C  
99+
1,064.43 °C  
99+
Boiling Point
0.00 °C  
99+
2,807.00 °C  
37
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Gold  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
-  
2.50  
15
Brinell Hardness
350.00 MPa  
36
194.00 MPa  
99+
Vickers Hardness
0.00 MPa  
99+
216.00 MPa  
99+
Speed of Sound
2,680.00 m/s  
99+
2,030.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.30  
99+
0.47  
99+
Reflectivity
66.00 %  
17
95.00 %  
2
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Md  
Au  
Isotopes
  
  
Known Isotopes
16  
23
36  
3
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
2.54  
2
Sanderson Electronegativity
1.30  
25
1.50  
18
Allred Rochow Electronegativity
1.20  
28
1.42  
19
Mulliken-Jaffe Electronegativity
1.30  
33
1.87  
15
Allen Electronegativity
1.30  
40
1.92  
7
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
1.46  
99+
Ionization Energies
  
  
1st Energy Level
635.00 kJ/mol  
99+
890.10 kJ/mol  
8
2nd Energy Level
1,235.00 kJ/mol  
99+
1,980.00 kJ/mol  
12
3rd Energy Level
2,470.00 kJ/mol  
99+
2,856.00 kJ/mol  
33
4th Energy Level
3,840.00 kJ/mol  
99+
890.10 kJ/mol  
99+
5th Energy Level
6,350.00 kJ/mol  
36
8,901.00 kJ/mol  
6
6th Energy Level
6,350.00 kJ/mol  
99+
8,901.00 kJ/mol  
24
7th Energy level
6,350.00 kJ/mol  
99+
8,901.00 kJ/mol  
21
8th Energy Level
6,350.00 kJ/mol  
99+
8,900.00 kJ/mol  
20
9th Energy Level
6,350.00 kJ/mol  
99+
8,901.00 kJ/mol  
20
10th Energy Level
6,350.00 kJ/mol  
99+
8,901.00 kJ/mol  
21
11th Energy Level
6,400.00 kJ/mol  
99+
8,901.00 kJ/mol  
19
12th Energy Level
60,100.00 kJ/mol  
16
8,900.00 kJ/mol  
39
13th Energy Level
6,350.00 kJ/mol  
37
8,900.00 kJ/mol  
14
14th Energy Level
1,150.00 kJ/mol  
99+
890.10 kJ/mol  
99+
15th Energy Level
63,500.00 kJ/mol  
37
89,000.00 kJ/mol  
7
16th Energy Level
635.00 kJ/mol  
99+
890.10 kJ/mol  
99+
17th Energy Level
1,107.00 kJ/mol  
21
890.10 kJ/mol  
25
18th Energy Level
6,350.00 kJ/mol  
39
8,901.00 kJ/mol  
14
19th Energy Level
635.00 kJ/mol  
99+
890.10 kJ/mol  
23
20th Energy Level
635.00 kJ/mol  
40
890.00 kJ/mol  
13
21st Energy Level
6,350.00 kJ/mol  
13
890.10 kJ/mol  
35
22nd Energy Level
635.00 kJ/mol  
34
890.00 kJ/mol  
11
23rd Energy Level
6,350.00 kJ/mol  
13
890.10 kJ/mol  
38
24th Energy Level
635.00 kJ/mol  
36
890.10 kJ/mol  
6
25th Energy Level
635.00 kJ/mol  
38
890.00 kJ/mol  
5
26th Energy Level
635.00 kJ/mol  
37
890.10 kJ/mol  
5
27th Energy Level
635.00 kJ/mol  
39
890.10 kJ/mol  
4
28th Energy Level
635.00 kJ/mol  
99+
890.10 kJ/mol  
7
29th Energy Level
635.00 kJ/mol  
99+
890.10 kJ/mol  
8
30th Energy Level
635.00 kJ/mol  
40
890.10 kJ/mol  
5
Electrochemical Equivalent
3.21 g/amp-hr  
13
2.45 g/amp-hr  
25
Electron Work Function
3.89 eV  
37
5.10 eV  
8
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Chemical Stability, Ionization, Solubility  
Atomic
Atomic Number
101  
17
79  
37
Electron Configuration
[Rn] 5f13 7s2  
[Xe] 4f14 5d10 6s1  
Crystal Structure
Not Known  
Face Centered Cubic (FCC)  
Crystal Lattice
Unknown-Crystal-Structure-of-Mendelevium.jpg#100  
FCC-Crystal-Structure-of-Gold.jpg#100  
Atom
  
  
Number of Protons
101  
17
79  
37
Number of Neutrons
157  
8
118  
24
Number of Electrons
101  
17
79  
37
Radius of an Atom
  
  
Atomic Radius
175.00 pm  
21
151.00 pm  
34
Covalent Radius
175.00 pm  
25
144.00 pm  
99+
Van der Waals Radius
246.00 pm  
12
166.00 pm  
99+
Atomic Weight
258.00 amu  
14
196.97 amu  
33
Atomic Volume
19.90 cm3/mol  
32
10.20 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Fermium
  
Platinum
  
Next Element
Nobelium
  
Mercury
  
Valence Electron Potential
63.70 (-eV)  
23
43.40 (-eV)  
99+
Lattice Constant
-  
407.82 pm  
24
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.58  
36
1.61  
18
Mechanical
Density
  
  
Density At Room Temperature
10.30 g/cm3  
38
19.30 g/cm3  
15
Density When Liquid (at m.p.)
10.30 g/cm3  
39
17.31 g/cm3  
16
Tensile Strength
80.00 MPa  
29
120.00 MPa  
27
Viscosity
0.00  
25
0.00  
23
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
25
Vapor Pressure at 2000 K
0.00 (Pa)  
37
67.00 (Pa)  
4
Elasticity properties
  
  
Shear Modulus
32.00 GPa  
24
27.00 GPa  
34
Bulk Modulus
0.00 GPa  
99+
180.00 GPa  
9
Young's Modulus
12.00 GPa  
99+
79.00 GPa  
26
Poisson Ratio
0.30  
14
0.40  
4
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
13.50  
29
19.32  
17
Magnetic Ordering
-  
Diamagnetic  
Permeability
0.00 H/m  
11
0.00 H/m  
10
Susceptibility
0.00  
24
0.00  
22
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
0.63 nΩ·m  
99+
2.20 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.45 106/cm Ω  
3
Electron Affinity
50.00 kJ/mol  
26
222.80 kJ/mol  
1
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
27.00 J/mol·K  
29
25.42 J/mol·K  
99+
Thermal Conductivity
0.00 W/m·K  
99+
318.00 W/m·K  
3
Critical Temperature
1,100.00 K  
99+
1,337.00 K  
99+
Thermal Expansion
11.60 µm/(m·K)  
99+
14.20 µm/(m·K)  
29
Enthalpy
  
  
Enthalpy of Vaporization
380.50 kJ/mol  
26
324.40 kJ/mol  
99+
Enthalpy of Fusion
-  
12.55 kJ/mol  
33
Enthalpy of Atomization
410.80 kJ/mol  
25
364.00 kJ/mol  
34
Standard Molar Entropy
37.40 J/mol.K  
99+
47.40 J/mol.K  
99+
Summary >>
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