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Berkelium Meitnerium Comparison

Berkelium
Meitnerium
Meitnerium Berkelium comparison


Periodic Table
Symbol
Bk  
Mt  
Group Number
14  
4
9  
9
Period Number
7  
7  
Block
f block  
d block  
Element Family
Actinide  
Probably Transition  
CAS Number
7440406  
99+
54038016  
10
Space Group Name
P63/mmc  
-  
Space Group Number
194.00  
7
166.00  
9
Facts
Interesting Facts
  • X-ray Diffraction- different compounds of Berkelium metals are identified using it.
    Commercial uses of Berkelium metal are not yet discovered.
  
Meitnerium is named after Lise Meitner, an Austrian physicist.  
Sources
Bombarding Americium with Alpha Particles.  
Bombarding Bi209 with Accelerated Nuclei of Fe58, Synthetically Produced  
History
  
  
Who Discovered
Lawrence Berkeley National Laboratory  
Gesellschaft für Schwerionenforschung  
Discovery
In 1949  
In 1982  
Abundance
  
  
Abundance In Universe
0.00 %  
36
0.00 %  
40
Abundance In Sun
0.00 %  
30
-  
Abundance In Meteorites
0.00 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
-  
Abundance In Oceans
-  
-  
Abundance In Humans
0.00 %  
24
-  
Uses
Uses & Benefits
  • This metal is very rare and has no commercial uses.
  
  • Currently known uses of Meitnerium metal are limited to research purpose only.
  
Industrial Uses
-  
-  
Medical Uses
-  
-  
Other Uses
-  
-  
Biological Properties
  
  
Toxicity
-  
-  
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
986.00 °C  
99+
-  
Boiling Point
2,627.00 °C  
99+
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
-  
Luster
Metallic  
Unknown Luster  
Hardness
  
  
Mohs Hardness
6.00  
6
-  
Brinell Hardness
260.00 MPa  
99+
400.00 MPa  
34
Vickers Hardness
1,070.00 MPa  
16
350.00 MPa  
99+
Speed of Sound
2,560.00 m/s  
99+
3,200.00 m/s  
35
Optical Properties
  
  
Refractive Index
1.30  
99+
1.30  
99+
Reflectivity
61.00 %  
22
68.00 %  
15
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Bk  
Mt  
Isotopes
  
  
Known Isotopes
14  
25
4  
33
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
1.30  
33
Sanderson Electronegativity
1.30  
25
1.90  
13
Allred Rochow Electronegativity
1.20  
28
1.30  
25
Mulliken-Jaffe Electronegativity
1.30  
33
1.30  
33
Allen Electronegativity
2.70  
1
1.30  
40
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
2.00  
99+
Ionization Energies
  
  
1st Energy Level
601.00 kJ/mol  
99+
800.80 kJ/mol  
15
2nd Energy Level
1,186.00 kJ/mol  
99+
1,823.60 kJ/mol  
18
3rd Energy Level
2,152.00 kJ/mol  
99+
2,904.20 kJ/mol  
31
4th Energy Level
3,434.00 kJ/mol  
99+
3,859.40 kJ/mol  
99+
5th Energy Level
6,010.00 kJ/mol  
99+
4,920.80 kJ/mol  
99+
6th Energy Level
6,010.00 kJ/mol  
99+
8,000.00 kJ/mol  
34
7th Energy level
6,010.00 kJ/mol  
99+
8,000.00 kJ/mol  
28
8th Energy Level
6,010.00 kJ/mol  
99+
8,000.00 kJ/mol  
28
9th Energy Level
6,010.00 kJ/mol  
99+
6,700.00 kJ/mol  
36
10th Energy Level
6,010.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
11th Energy Level
6,010.00 kJ/mol  
99+
6,300.00 kJ/mol  
99+
12th Energy Level
60,100.00 kJ/mol  
16
0.00 kJ/mol  
99+
13th Energy Level
6,010.00 kJ/mol  
99+
8,000.00 kJ/mol  
20
14th Energy Level
6,010.00 kJ/mol  
32
1,156.00 kJ/mol  
99+
15th Energy Level
60,100.00 kJ/mol  
99+
80,000.00 kJ/mol  
17
16th Energy Level
60,100.00 kJ/mol  
33
58,700.00 kJ/mol  
39
17th Energy Level
601.00 kJ/mol  
99+
1,110.00 kJ/mol  
20
18th Energy Level
6,010.00 kJ/mol  
99+
8,000.00 kJ/mol  
23
19th Energy Level
601.00 kJ/mol  
99+
1,110.00 kJ/mol  
17
20th Energy Level
601.00 kJ/mol  
99+
850.00 kJ/mol  
18
21st Energy Level
6,010.00 kJ/mol  
18
800.00 kJ/mol  
99+
22nd Energy Level
601.00 kJ/mol  
99+
380.00 kJ/mol  
99+
23rd Energy Level
6,010.00 kJ/mol  
19
8,000.00 kJ/mol  
9
24th Energy Level
601.00 kJ/mol  
99+
565.60 kJ/mol  
99+
25th Energy Level
601.00 kJ/mol  
99+
800.00 kJ/mol  
13
26th Energy Level
601.00 kJ/mol  
99+
800.00 kJ/mol  
13
27th Energy Level
601.00 kJ/mol  
99+
800.00 kJ/mol  
12
28th Energy Level
601.00 kJ/mol  
99+
800.00 kJ/mol  
18
29th Energy Level
601.00 kJ/mol  
99+
800.00 kJ/mol  
18
30th Energy Level
601.00 kJ/mol  
99+
800.00 kJ/mol  
13
Electrochemical Equivalent
3.07 g/amp-hr  
19
3.00 g/amp-hr  
21
Electron Work Function
4.90 eV  
12
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
97  
21
109  
9
Electron Configuration
[Rn] 5f9 7s2  
[Rn] 5f14 6d7 7s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
DHCP-Crystal-Structure-of-Berkelium.jpg#100  
FCC-Crystal-Structure-of-Meitnerium.jpg#100  
Atom
  
  
Number of Protons
97  
21
109  
9
Number of Neutrons
150  
12
157  
8
Number of Electrons
97  
21
109  
9
Radius of an Atom
  
  
Atomic Radius
170.00 pm  
24
122.00 pm  
99+
Covalent Radius
170.00 pm  
27
129.00 pm  
99+
Van der Waals Radius
244.00 pm  
14
260.00 pm  
9
Atomic Weight
247.00 amu  
18
278.00 amu  
7
Atomic Volume
13.39 cm3/mol  
99+
20.20 cm3/mol  
30
Adjacent Atomic Numbers
  
  
Previous Element
Curium
  
Hassium
  
Next Element
Californium
  
Darmstadtium
  
Valence Electron Potential
45.50 (-eV)  
37
31.20 (-eV)  
99+
Lattice Constant
341.60 pm  
99+
0.00 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
-  
Lattice C/A Ratio
1.57  
38
1.59  
27
Mechanical
Density
  
  
Density At Room Temperature
14.78 g/cm3  
23
37.40 g/cm3  
2
Density When Liquid (at m.p.)
13.25 g/cm3  
29
37.40 g/cm3  
2
Tensile Strength
70.00 MPa  
31
80.00 MPa  
29
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
30
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
27.00 GPa  
34
35.00 GPa  
21
Bulk Modulus
13.00 GPa  
99+
0.00 GPa  
99+
Young's Modulus
13.00 GPa  
99+
13.50 GPa  
99+
Poisson Ratio
0.35  
9
0.25  
24
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
14.00  
25
37.40  
4
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
13
0.00 H/m  
12
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
-  
Resistivity
7.60 nΩ·m  
99+
0.35 nΩ·m  
99+
Electrical Conductivity
0.10 106/cm Ω  
25
0.00 106/cm Ω  
99+
Electron Affinity
0.00 kJ/mol  
99+
50.00 kJ/mol  
26
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.10 J/(kg K)  
99+
Molar Heat Capacity
27.00 J/mol·K  
29
27.00 J/mol·K  
29
Thermal Conductivity
10.00 W/m·K  
99+
0.00 W/m·K  
99+
Critical Temperature
1,323.00 K  
99+
1,323.00 K  
99+
Thermal Expansion
13.25 µm/(m·K)  
36
10.30 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
380.00 kJ/mol  
27
110.00 kJ/mol  
99+
Enthalpy of Fusion
13.25 kJ/mol  
31
-  
Enthalpy of Atomization
601.00 kJ/mol  
11
350.20 kJ/mol  
37
Standard Molar Entropy
52.00 J/mol.K  
37
63.80 J/mol.K  
22
Summary >>
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Actinide Series

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