Home
 Compare Metals

Meitnerium vs Roentgenium

Meitnerium
Roentgenium
Roentgenium vs Meitnerium


Periodic Table
Symbol
Mt  
Rg  
Group Number
9  
9
11  
7
Period Number
7  
7  
Block
d block  
d block  
Element Family
Probably Transition  
-  
CAS Number
54038016  
10
54386242  
1
Space Group Name
-  
-  
Space Group Number
166.00  
9
194.00  
7
Facts
Interesting Facts
Meitnerium is named after Lise Meitner, an Austrian physicist.  
Roentgenium is a highly unstable synthetic element.  
Sources
Bombarding Bi209 with Accelerated Nuclei of Fe58, Synthetically Produced  
Synthetically Produced  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Gesellschaft für Schwerionenforschung  
Discovery
In 1982  
In 1994  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
40
Abundance In Sun
-  
-  
Abundance In Meteorites
0.00 %  
99+
-  
Abundance In Earth's Crust
-  
-  
Abundance In Oceans
-  
-  
Abundance In Humans
-  
-  
Uses
Uses & Benefits
  • Currently known uses of Meitnerium metal are limited to research purpose only.
  
  • Currently known uses of Roentgenium metal are limited to research purpose only.
  
Industrial Uses
-  
-  
Medical Uses
-  
-  
Other Uses
-  
Research Purposes  
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
-  
-  
Boiling Point
0.00 °C  
99+
2,800.00 °C  
38
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Silver  
Luster
Unknown Luster  
Unknown Luster  
Hardness
  
  
Mohs Hardness
-  
-  
Brinell Hardness
400.00 MPa  
34
700.00 MPa  
17
Vickers Hardness
350.00 MPa  
99+
450.00 MPa  
38
Speed of Sound
3,200.00 m/s  
35
3,430.00 m/s  
32
Optical Properties
  
  
Refractive Index
1.30  
99+
1.30  
99+
Reflectivity
68.00 %  
15
64.00 %  
19
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Mt  
Rg  
Isotopes
  
  
Known Isotopes
4  
33
1  
34
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
0.00  
99+
Sanderson Electronegativity
1.90  
13
1.90  
13
Allred Rochow Electronegativity
1.30  
25
1.30  
25
Mulliken-Jaffe Electronegativity
1.30  
33
0.90  
99+
Allen Electronegativity
1.30  
40
0.80  
99+
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.20  
39
Ionization Energies
  
  
1st Energy Level
800.80 kJ/mol  
15
1,022.70 kJ/mol  
3
2nd Energy Level
1,823.60 kJ/mol  
18
2,074.40 kJ/mol  
10
3rd Energy Level
2,904.20 kJ/mol  
31
3,077.90 kJ/mol  
24
4th Energy Level
3,859.40 kJ/mol  
99+
4,052.40 kJ/mol  
99+
5th Energy Level
4,920.80 kJ/mol  
99+
5,306.70 kJ/mol  
99+
6th Energy Level
8,000.00 kJ/mol  
34
11,100.00 kJ/mol  
10
7th Energy level
8,000.00 kJ/mol  
28
5,800.00 kJ/mol  
99+
8th Energy Level
8,000.00 kJ/mol  
28
5,800.00 kJ/mol  
99+
9th Energy Level
6,700.00 kJ/mol  
36
5,650.00 kJ/mol  
99+
10th Energy Level
5,800.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
11th Energy Level
6,300.00 kJ/mol  
99+
8,300.00 kJ/mol  
24
12th Energy Level
0.00 kJ/mol  
99+
8,300.00 kJ/mol  
99+
13th Energy Level
8,000.00 kJ/mol  
20
8,700.00 kJ/mol  
16
14th Energy Level
1,156.00 kJ/mol  
99+
8,300.00 kJ/mol  
16
15th Energy Level
80,000.00 kJ/mol  
17
87,000.00 kJ/mol  
9
16th Energy Level
58,700.00 kJ/mol  
39
83,000.00 kJ/mol  
11
17th Energy Level
1,110.00 kJ/mol  
20
830.80 kJ/mol  
30
18th Energy Level
8,000.00 kJ/mol  
23
8,300.00 kJ/mol  
19
19th Energy Level
1,110.00 kJ/mol  
17
580.00 kJ/mol  
99+
20th Energy Level
850.00 kJ/mol  
18
580.00 kJ/mol  
99+
21st Energy Level
800.00 kJ/mol  
99+
5,800.00 kJ/mol  
21
22nd Energy Level
380.00 kJ/mol  
99+
580.00 kJ/mol  
99+
23rd Energy Level
8,000.00 kJ/mol  
9
5,800.00 kJ/mol  
21
24th Energy Level
565.60 kJ/mol  
99+
538.70 kJ/mol  
99+
25th Energy Level
800.00 kJ/mol  
13
0.00 kJ/mol  
99+
26th Energy Level
800.00 kJ/mol  
13
580.00 kJ/mol  
99+
27th Energy Level
800.00 kJ/mol  
12
580.00 kJ/mol  
99+
28th Energy Level
800.00 kJ/mol  
18
880.00 kJ/mol  
8
29th Energy Level
800.00 kJ/mol  
18
580.00 kJ/mol  
99+
30th Energy Level
800.00 kJ/mol  
13
0.00 kJ/mol  
99+
Electrochemical Equivalent
3.00 g/amp-hr  
21
3.10 g/amp-hr  
18
Electron Work Function
4.90 eV  
12
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
-  
Atomic
Atomic Number
109  
9
111  
7
Electron Configuration
[Rn] 5f14 6d7 7s2  
[Rn] 5f14 6d9 7s2  
Crystal Structure
Face Centered Cubic (FCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Meitnerium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
109  
9
111  
7
Number of Neutrons
157  
8
161  
4
Number of Electrons
109  
9
111  
7
Radius of an Atom
  
  
Atomic Radius
122.00 pm  
99+
200.00 pm  
7
Covalent Radius
129.00 pm  
99+
126.00 pm  
99+
Van der Waals Radius
260.00 pm  
9
280.00 pm  
6
Atomic Weight
278.00 amu  
7
281.00 amu  
6
Atomic Volume
20.20 cm3/mol  
30
28.70 cm3/mol  
12
Adjacent Atomic Numbers
  
  
Previous Element
Hassium
  
Darmstadtium
  
Next Element
Darmstadtium
  
Copernicium
  
Valence Electron Potential
31.20 (-eV)  
99+
11.90 (-eV)  
99+
Lattice Constant
0.00 pm  
99+
0.00 pm  
99+
Lattice Angles
-  
-  
Lattice C/A Ratio
1.59  
27
1.90  
1
Mechanical
Density
  
  
Density At Room Temperature
37.40 g/cm3  
2
28.70 g/cm3  
6
Density When Liquid (at m.p.)
37.40 g/cm3  
2
28.70 g/cm3  
7
Tensile Strength
80.00 MPa  
29
65.00 MPa  
33
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
35.00 GPa  
21
26.00 GPa  
36
Bulk Modulus
0.00 GPa  
99+
0.00 GPa  
99+
Young's Modulus
13.50 GPa  
99+
12.70 GPa  
99+
Poisson Ratio
0.25  
24
0.30  
14
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
37.40  
4
28.70  
8
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
12
0.00 H/m  
12
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
0.35 nΩ·m  
99+
0.20 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
50.00 kJ/mol  
26
50.00 kJ/mol  
26
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
27.00 J/mol·K  
29
23.70 J/mol·K  
99+
Thermal Conductivity
0.00 W/m·K  
99+
0.10 W/m·K  
99+
Critical Temperature
1,323.00 K  
99+
1,100.00 K  
99+
Thermal Expansion
10.30 µm/(m·K)  
99+
12.60 µm/(m·K)  
40
Enthalpy
  
  
Enthalpy of Vaporization
110.00 kJ/mol  
99+
580.00 kJ/mol  
12
Enthalpy of Fusion
-  
-  
Enthalpy of Atomization
350.20 kJ/mol  
37
580.00 kJ/mol  
14
Standard Molar Entropy
63.80 J/mol.K  
22
57.00 J/mol.K  
30
Periodic Table >>
<< All

Compare Synthetic Metals

Synthetic Metals

Synthetic Metals

Compare Synthetic Metals

Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!