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Meitnerium Thallium Comparison

Meitnerium
Thallium
Thallium Meitnerium comparison


Periodic Table
Symbol
Mt  
Tl  
Group Number
9  
9
13  
5
Period Number
7  
6  
Block
d block  
p block  
Element Family
Probably Transition  
Post-​Transition  
CAS Number
54038016  
10
7440280  
99+
Space Group Name
-  
P63/mmc  
Space Group Number
166.00  
9
194.00  
7
Facts
Interesting Facts
Meitnerium is named after Lise Meitner, an Austrian physicist.  
  • Compounds of Thallium metal are highly Toxic.
  • Thallium metal is being suspected as a human carcinogen.
  
Sources
Bombarding Bi209 with Accelerated Nuclei of Fe58, Synthetically Produced  
Found As a By-product, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
William Crookes  
Discovery
In 1982  
In 1861  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
33
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 %  
34
Abundance In Humans
-  
0.00 %  
24
Uses
Uses & Benefits
  • Currently known uses of Meitnerium metal are limited to research purpose only.
  
  • Thallium is a toxic metal and hence it has limited uses. Thallium metal is mostly used for producing photoelectric cells.
  • In thermometer’s mercury alloy has 8% of thallium, as it has a melting point lower than 20°C.
  
Industrial Uses
-  
Chemical Industry  
Medical Uses
-  
Medical Research  
Other Uses
-  
Alloys  
Biological Properties
  
  
Toxicity
-  
Highly Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
38
Physical
Melting Point
-  
303.50 °C  
99+
Boiling Point
0.00 °C  
99+
1,457.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Silvery White  
Luster
Unknown Luster  
-  
Hardness
  
  
Mohs Hardness
-  
1.20  
21
Brinell Hardness
400.00 MPa  
34
26.50 MPa  
99+
Vickers Hardness
350.00 MPa  
99+
120.00 MPa  
99+
Speed of Sound
3,200.00 m/s  
35
818.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.30  
99+
1.90  
18
Reflectivity
68.00 %  
15
8.00 %  
37
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Mt  
Tl  
Isotopes
  
  
Known Isotopes
4  
33
32  
7
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
1.62  
22
Sanderson Electronegativity
1.90  
13
2.25  
6
Allred Rochow Electronegativity
1.30  
25
1.44  
18
Mulliken-Jaffe Electronegativity
1.30  
33
1.96  
11
Allen Electronegativity
1.30  
40
1.79  
16
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.38  
33
Ionization Energies
  
  
1st Energy Level
800.80 kJ/mol  
15
589.40 kJ/mol  
99+
2nd Energy Level
1,823.60 kJ/mol  
18
1,971.00 kJ/mol  
14
3rd Energy Level
2,904.20 kJ/mol  
31
2,878.00 kJ/mol  
32
4th Energy Level
3,859.40 kJ/mol  
99+
5,890.00 kJ/mol  
17
5th Energy Level
4,920.80 kJ/mol  
99+
5,890.00 kJ/mol  
99+
6th Energy Level
8,000.00 kJ/mol  
34
5,890.00 kJ/mol  
99+
7th Energy level
8,000.00 kJ/mol  
28
5,890.00 kJ/mol  
99+
8th Energy Level
8,000.00 kJ/mol  
28
5,890.00 kJ/mol  
99+
9th Energy Level
6,700.00 kJ/mol  
36
5,890.00 kJ/mol  
99+
10th Energy Level
5,800.00 kJ/mol  
99+
5,890.00 kJ/mol  
99+
11th Energy Level
6,300.00 kJ/mol  
99+
5,890.00 kJ/mol  
99+
12th Energy Level
0.00 kJ/mol  
99+
5,890.00 kJ/mol  
99+
13th Energy Level
8,000.00 kJ/mol  
20
5,890.00 kJ/mol  
99+
14th Energy Level
1,156.00 kJ/mol  
99+
5,890.00 kJ/mol  
37
15th Energy Level
80,000.00 kJ/mol  
17
58,900.00 kJ/mol  
99+
16th Energy Level
58,700.00 kJ/mol  
39
58,900.00 kJ/mol  
38
17th Energy Level
1,110.00 kJ/mol  
20
589.40 kJ/mol  
99+
18th Energy Level
8,000.00 kJ/mol  
23
5,890.00 kJ/mol  
99+
19th Energy Level
1,110.00 kJ/mol  
17
589.40 kJ/mol  
99+
20th Energy Level
850.00 kJ/mol  
18
589.00 kJ/mol  
99+
21st Energy Level
800.00 kJ/mol  
99+
589.40 kJ/mol  
99+
22nd Energy Level
380.00 kJ/mol  
99+
589.00 kJ/mol  
99+
23rd Energy Level
8,000.00 kJ/mol  
9
589.40 kJ/mol  
99+
24th Energy Level
565.60 kJ/mol  
99+
589.40 kJ/mol  
99+
25th Energy Level
800.00 kJ/mol  
13
589.40 kJ/mol  
99+
26th Energy Level
800.00 kJ/mol  
13
589.40 kJ/mol  
99+
27th Energy Level
800.00 kJ/mol  
12
589.40 kJ/mol  
99+
28th Energy Level
800.00 kJ/mol  
18
589.40 kJ/mol  
99+
29th Energy Level
800.00 kJ/mol  
18
589.40 kJ/mol  
99+
30th Energy Level
800.00 kJ/mol  
13
589.40 kJ/mol  
99+
Electrochemical Equivalent
3.00 g/amp-hr  
21
7.63 g/amp-hr  
2
Electron Work Function
4.90 eV  
12
3.84 eV  
39
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
109  
9
81  
35
Electron Configuration
[Rn] 5f14 6d7 7s2  
[Xe] 4f14 5d10 6s2 6p1  
Crystal Structure
Face Centered Cubic (FCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
FCC-Crystal-Structure-of-Meitnerium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
109  
9
81  
35
Number of Neutrons
157  
8
123  
21
Number of Electrons
109  
9
81  
35
Radius of an Atom
  
  
Atomic Radius
122.00 pm  
99+
170.00 pm  
24
Covalent Radius
129.00 pm  
99+
145.00 pm  
99+
Van der Waals Radius
260.00 pm  
9
196.00 pm  
37
Atomic Weight
278.00 amu  
7
204.38 amu  
31
Atomic Volume
20.20 cm3/mol  
30
17.20 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Hassium
  
Mercury
  
Next Element
Darmstadtium
  
Lead
  
Valence Electron Potential
31.20 (-eV)  
99+
9.60 (-eV)  
99+
Lattice Constant
0.00 pm  
99+
345.66 pm  
99+
Lattice Angles
-  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.59  
27
1.60  
23
Mechanical
Density
  
  
Density At Room Temperature
37.40 g/cm3  
2
11.85 g/cm3  
33
Density When Liquid (at m.p.)
37.40 g/cm3  
2
11.22 g/cm3  
33
Tensile Strength
80.00 MPa  
29
47.00 MPa  
39
Viscosity
0.00  
25
0.00  
22
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
16.90 (Pa)  
5
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.00 (Pa)  
38
Elasticity properties
  
  
Shear Modulus
35.00 GPa  
21
2.80 GPa  
99+
Bulk Modulus
0.00 GPa  
99+
43.00 GPa  
33
Young's Modulus
13.50 GPa  
99+
8.00 GPa  
99+
Poisson Ratio
0.25  
24
0.45  
2
Other Mechanical Properties
-  
Ductile, Sectile  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
37.40  
4
11.85  
35
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
28
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
0.35 nΩ·m  
99+
0.18 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.06 106/cm Ω  
37
Electron Affinity
50.00 kJ/mol  
26
19.20 kJ/mol  
38
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
27.00 J/mol·K  
29
26.32 J/mol·K  
37
Thermal Conductivity
0.00 W/m·K  
99+
46.10 W/m·K  
33
Critical Temperature
1,323.00 K  
99+
577.00 K  
99+
Thermal Expansion
10.30 µm/(m·K)  
99+
29.90 µm/(m·K)  
12
Enthalpy
  
  
Enthalpy of Vaporization
110.00 kJ/mol  
99+
162.10 kJ/mol  
99+
Enthalpy of Fusion
-  
4.27 kJ/mol  
99+
Enthalpy of Atomization
350.20 kJ/mol  
37
179.90 kJ/mol  
99+
Standard Molar Entropy
63.80 J/mol.K  
22
64.20 J/mol.K  
20
Summary >>
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