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Mendelevium Plutonium Comparison

Mendelevium
Plutonium
Plutonium Mendelevium comparison


Periodic Table
Symbol
Md  
Pu  
Group Number
3  
15
0  
18
Period Number
7  
7  
Block
f block  
f block  
Element Family
Actinide  
Actinide  
CAS Number
7440111  
99+
7440075  
99+
Space Group Name
-  
P121/m1  
Space Group Number
194.00  
7
11.00  
16
Facts
Interesting Facts
  • Mendelevium metal is synthetically produced metal.
  • Mendelevium metal has been produced in only trace amount.
  
  • Plutonium metal if obtain from ores of uranium metal.
  • Plutonium metal is very sensitive to the change in atmospheric conditions like temperature and pressure.
  
Sources
Bombarding Einsteinium with Helium Ions  
Mining, Ores of metals  
History
  
  
Who Discovered
Lawrence Berkeley National Laboratory  
Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin McMillan  
Discovery
In 1955  
In Between 1940 1941  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
40
Abundance In Sun
-  
0.00 %  
21
Abundance In Meteorites
0.00 %  
99+
-  
Abundance In Earth's Crust
-  
0.00 %  
99+
Abundance In Oceans
-  
-  
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • Currently known uses of Mendelevium metal are limited to research purpose only.
  
  • Plutonium was used in atomic bombs and still it is being used in various weapons and Ammunition industry.
  • It is also used in nuclear power plant as source of energy for space missions.
  
Industrial Uses
-  
Aerospace Industry, Ammunition Industry  
Medical Uses
-  
-  
Other Uses
-  
Alloys  
Biological Properties
  
  
Toxicity
-  
Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
827.00 °C  
99+
639.50 °C  
99+
Boiling Point
0.00 °C  
99+
3,235.00 °C  
25
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Silvery White  
Luster
Metallic  
-  
Hardness
  
  
Mohs Hardness
-  
4.00  
11
Brinell Hardness
350.00 MPa  
36
627.00 MPa  
22
Vickers Hardness
0.00 MPa  
99+
617.00 MPa  
26
Speed of Sound
2,680.00 m/s  
99+
2,260.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.30  
99+
1.90  
18
Reflectivity
66.00 %  
17
68.00 %  
15
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Md  
Pu  
Isotopes
  
  
Known Isotopes
16  
23
20  
19
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
1.28  
34
Sanderson Electronegativity
1.30  
25
1.28  
26
Allred Rochow Electronegativity
1.20  
28
1.22  
27
Mulliken-Jaffe Electronegativity
1.30  
33
1.30  
33
Allen Electronegativity
1.30  
40
1.28  
99+
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
2.72  
21
Ionization Energies
  
  
1st Energy Level
635.00 kJ/mol  
99+
584.70 kJ/mol  
99+
2nd Energy Level
1,235.00 kJ/mol  
99+
1,128.00 kJ/mol  
99+
3rd Energy Level
2,470.00 kJ/mol  
99+
2,084.00 kJ/mol  
99+
4th Energy Level
3,840.00 kJ/mol  
99+
3,338.00 kJ/mol  
99+
5th Energy Level
6,350.00 kJ/mol  
36
5,847.00 kJ/mol  
99+
6th Energy Level
6,350.00 kJ/mol  
99+
5,847.00 kJ/mol  
99+
7th Energy level
6,350.00 kJ/mol  
99+
5,840.00 kJ/mol  
99+
8th Energy Level
6,350.00 kJ/mol  
99+
5,840.00 kJ/mol  
99+
9th Energy Level
6,350.00 kJ/mol  
99+
5,840.00 kJ/mol  
99+
10th Energy Level
6,350.00 kJ/mol  
99+
5,840.00 kJ/mol  
99+
11th Energy Level
6,400.00 kJ/mol  
99+
5,840.00 kJ/mol  
99+
12th Energy Level
60,100.00 kJ/mol  
16
58,400.00 kJ/mol  
18
13th Energy Level
6,350.00 kJ/mol  
37
5,840.00 kJ/mol  
99+
14th Energy Level
1,150.00 kJ/mol  
99+
5,840.00 kJ/mol  
39
15th Energy Level
63,500.00 kJ/mol  
37
58,400.00 kJ/mol  
99+
16th Energy Level
635.00 kJ/mol  
99+
58,400.00 kJ/mol  
40
17th Energy Level
1,107.00 kJ/mol  
21
584.70 kJ/mol  
99+
18th Energy Level
6,350.00 kJ/mol  
39
5,840.00 kJ/mol  
99+
19th Energy Level
635.00 kJ/mol  
99+
584.70 kJ/mol  
99+
20th Energy Level
635.00 kJ/mol  
40
584.00 kJ/mol  
99+
21st Energy Level
6,350.00 kJ/mol  
13
584.70 kJ/mol  
99+
22nd Energy Level
635.00 kJ/mol  
34
584.00 kJ/mol  
99+
23rd Energy Level
6,350.00 kJ/mol  
13
584.70 kJ/mol  
99+
24th Energy Level
635.00 kJ/mol  
36
584.70 kJ/mol  
99+
25th Energy Level
635.00 kJ/mol  
38
584.70 kJ/mol  
99+
26th Energy Level
635.00 kJ/mol  
37
584.70 kJ/mol  
99+
27th Energy Level
635.00 kJ/mol  
39
584.70 kJ/mol  
99+
28th Energy Level
635.00 kJ/mol  
99+
584.70 kJ/mol  
99+
29th Energy Level
635.00 kJ/mol  
99+
584.70 kJ/mol  
99+
30th Energy Level
635.00 kJ/mol  
40
584.00 kJ/mol  
99+
Electrochemical Equivalent
3.21 g/amp-hr  
13
2.28 g/amp-hr  
26
Electron Work Function
3.89 eV  
37
3.88 eV  
38
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Corrosion, Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
101  
17
94  
24
Electron Configuration
[Rn] 5f13 7s2  
[Rn] 5f6 7s2  
Crystal Structure
Not Known  
Monoclinic (MON)  
Crystal Lattice
Unknown-Crystal-Structure-of-Mendelevium.jpg#100  
MON-Crystal-Structure-of-Plutonium.jpg#100  
Atom
  
  
Number of Protons
101  
17
94  
24
Number of Neutrons
157  
8
150  
12
Number of Electrons
101  
17
94  
24
Radius of an Atom
  
  
Atomic Radius
175.00 pm  
21
159.00 pm  
30
Covalent Radius
175.00 pm  
25
187.00 pm  
20
Van der Waals Radius
246.00 pm  
12
200.00 pm  
35
Atomic Weight
258.00 amu  
14
244.00 amu  
19
Atomic Volume
19.90 cm3/mol  
32
12.32 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Fermium
  
Neptunium
  
Next Element
Nobelium
  
Americium
  
Valence Electron Potential
63.70 (-eV)  
23
64.90 (-eV)  
21
Lattice Constant
-  
618.30 pm  
4
Lattice Angles
-  
-  
Lattice C/A Ratio
1.58  
36
1.74  
6
Mechanical
Density
  
  
Density At Room Temperature
10.30 g/cm3  
38
19.82 g/cm3  
13
Density When Liquid (at m.p.)
10.30 g/cm3  
39
16.63 g/cm3  
18
Tensile Strength
80.00 MPa  
29
40.00 MPa  
99+
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
28
Vapor Pressure at 2000 K
0.00 (Pa)  
37
2.20 (Pa)  
12
Elasticity properties
  
  
Shear Modulus
32.00 GPa  
24
43.00 GPa  
18
Bulk Modulus
0.00 GPa  
99+
100.00 GPa  
16
Young's Modulus
12.00 GPa  
99+
96.00 GPa  
23
Poisson Ratio
0.30  
14
0.21  
33
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
13.50  
29
19.84  
16
Magnetic Ordering
-  
Paramagnetic  
Permeability
0.00 H/m  
11
0.00 H/m  
16
Susceptibility
0.00  
24
0.00  
21
Electrical Properties
  
  
Electrical Property
-  
Poor Conductor  
Resistivity
0.63 nΩ·m  
99+
1.46 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.01 106/cm Ω  
99+
Electron Affinity
50.00 kJ/mol  
26
0.60 kJ/mol  
99+
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
27.00 J/mol·K  
29
35.50 J/mol·K  
4
Thermal Conductivity
0.00 W/m·K  
99+
6.74 W/m·K  
99+
Critical Temperature
1,100.00 K  
99+
913.00 K  
99+
Thermal Expansion
11.60 µm/(m·K)  
99+
46.70 µm/(m·K)  
6
Enthalpy
  
  
Enthalpy of Vaporization
380.50 kJ/mol  
26
344.00 kJ/mol  
36
Enthalpy of Fusion
-  
2.82 kJ/mol  
99+
Enthalpy of Atomization
410.80 kJ/mol  
25
360.00 kJ/mol  
35
Standard Molar Entropy
37.40 J/mol.K  
99+
37.10 J/mol.K  
99+
Summary >>
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