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Meitnerium vs Chromium

Meitnerium
Chromium
Chromium vs Meitnerium


Periodic Table
Symbol
Mt  
Cr  
Group Number
9  
9
6  
12
Period Number
7  
4  
Block
d block  
d block  
Element Family
Probably Transition  
Transition Metal  
CAS Number
54038016  
10
7440473  
39
Space Group Name
-  
Im_ 3m  
Space Group Number
166.00  
9
229.00  
2
Facts
Interesting Facts
Meitnerium is named after Lise Meitner, an Austrian physicist.  
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
  
Sources
Bombarding Bi209 with Accelerated Nuclei of Fe58, Synthetically Produced  
Found in Minerals, Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Louis Nicolas Vauquelin  
Discovery
In 1982  
In Between 1797 - 1798  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
8
Abundance In Sun
-  
0.00 %  
7
Abundance In Meteorites
0.00 %  
99+
0.30 %  
7
Abundance In Earth's Crust
-  
0.01 %  
13
Abundance In Oceans
-  
0.00 %  
16
Abundance In Humans
-  
0.00 %  
19
Uses
Uses & Benefits
  • Currently known uses of Meitnerium metal are limited to research purpose only.
  
  • It is used to harden the steel and produces a stainless steel and other various alloys.
  • It is also used to give proper finish to polished mirrors. Its chromium plates are used in bathroom fittings.
  
Industrial Uses
-  
Automobile Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
-  
Alloys  
Biological Properties
  
  
Toxicity
-  
Highly Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.11 Blood/mg dm-3  
12
In Bone
0.00 p.p.m.  
99+
0.33 p.p.m.  
25
Physical
Melting Point
-  
1,857.00 °C  
14
Boiling Point
0.00 °C  
99+
2,672.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Silver  
Luster
Unknown Luster  
Metallic  
Hardness
  
  
Mohs Hardness
-  
8.50  
1
Brinell Hardness
400.00 MPa  
34
687.00 MPa  
18
Vickers Hardness
350.00 MPa  
99+
1,060.00 MPa  
17
Speed of Sound
3,200.00 m/s  
35
5,940.00 m/s  
8
Optical Properties
  
  
Refractive Index
1.30  
99+
2.97  
2
Reflectivity
68.00 %  
15
70.00 %  
13
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Mt  
Cr  
Isotopes
  
  
Known Isotopes
4  
33
21  
18
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
1.66  
19
Sanderson Electronegativity
1.90  
13
1.66  
17
Allred Rochow Electronegativity
1.30  
25
1.56  
11
Mulliken-Jaffe Electronegativity
1.30  
33
1.66  
19
Allen Electronegativity
1.30  
40
1.65  
22
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.34  
36
Ionization Energies
  
  
1st Energy Level
800.80 kJ/mol  
15
26,130.00 kJ/mol  
1
2nd Energy Level
1,823.60 kJ/mol  
18
28,750.00 kJ/mol  
1
3rd Energy Level
2,904.20 kJ/mol  
31
34,230.00 kJ/mol  
1
4th Energy Level
3,859.40 kJ/mol  
99+
37,066.00 kJ/mol  
1
5th Energy Level
4,920.80 kJ/mol  
99+
97,510.00 kJ/mol  
1
6th Energy Level
8,000.00 kJ/mol  
34
105,800.00 kJ/mol  
1
7th Energy level
8,000.00 kJ/mol  
28
114,300.00 kJ/mol  
1
8th Energy Level
8,000.00 kJ/mol  
28
125,300.00 kJ/mol  
1
9th Energy Level
6,700.00 kJ/mol  
36
134,700.00 kJ/mol  
1
10th Energy Level
5,800.00 kJ/mol  
99+
144,300.00 kJ/mol  
1
11th Energy Level
6,300.00 kJ/mol  
99+
26,130.00 kJ/mol  
12
12th Energy Level
0.00 kJ/mol  
99+
28,750.00 kJ/mol  
36
13th Energy Level
8,000.00 kJ/mol  
20
34,230.00 kJ/mol  
10
14th Energy Level
1,156.00 kJ/mol  
99+
37,066.00 kJ/mol  
12
15th Energy Level
80,000.00 kJ/mol  
17
97,510.00 kJ/mol  
2
16th Energy Level
58,700.00 kJ/mol  
39
105,800.00 kJ/mol  
2
17th Energy Level
1,110.00 kJ/mol  
20
114,300.00 kJ/mol  
3
18th Energy Level
8,000.00 kJ/mol  
23
125,300.00 kJ/mol  
4
19th Energy Level
1,110.00 kJ/mol  
17
134,700.00 kJ/mol  
5
20th Energy Level
850.00 kJ/mol  
18
144,300.00 kJ/mol  
7
21st Energy Level
800.00 kJ/mol  
99+
157,700.00 kJ/mol  
7
22nd Energy Level
380.00 kJ/mol  
99+
166,090.00 kJ/mol  
6
23rd Energy Level
8,000.00 kJ/mol  
9
653.80 kJ/mol  
99+
24th Energy Level
565.60 kJ/mol  
99+
653.80 kJ/mol  
32
25th Energy Level
800.00 kJ/mol  
13
653.80 kJ/mol  
34
26th Energy Level
800.00 kJ/mol  
13
653.80 kJ/mol  
33
27th Energy Level
800.00 kJ/mol  
12
652.90 kJ/mol  
34
28th Energy Level
800.00 kJ/mol  
18
653.80 kJ/mol  
39
29th Energy Level
800.00 kJ/mol  
18
653.80 kJ/mol  
40
30th Energy Level
800.00 kJ/mol  
13
653.80 kJ/mol  
36
Electrochemical Equivalent
3.00 g/amp-hr  
21
0.32 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.50 eV  
19
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
109  
9
24  
99+
Electron Configuration
[Rn] 5f14 6d7 7s2  
[Ar] 3d5 4s1  
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
24  
99+
Number of Neutrons
157  
8
28  
99+
Number of Electrons
109  
9
24  
99+
Radius of an Atom
  
  
Atomic Radius
122.00 pm  
99+
128.00 pm  
99+
Covalent Radius
129.00 pm  
99+
139.00 pm  
99+
Van der Waals Radius
260.00 pm  
9
200.00 pm  
35
Atomic Weight
278.00 amu  
7
52.00 amu  
99+
Atomic Volume
20.20 cm3/mol  
30
7.23 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Hassium
  
Vanadium
  
Next Element
Darmstadtium
  
Manganese
  
Valence Electron Potential
31.20 (-eV)  
99+
170.00 (-eV)  
4
Lattice Constant
0.00 pm  
99+
291.00 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.59  
27
1.86  
4
Mechanical
Density
  
  
Density At Room Temperature
37.40 g/cm3  
2
7.19 g/cm3  
99+
Density When Liquid (at m.p.)
37.40 g/cm3  
2
6.30 g/cm3  
99+
Tensile Strength
80.00 MPa  
29
689.00 MPa  
7
Viscosity
0.00  
25
0.00  
23
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
26
Vapor Pressure at 2000 K
0.00 (Pa)  
37
774.00 (Pa)  
1
Elasticity properties
  
  
Shear Modulus
35.00 GPa  
21
115.00 GPa  
9
Bulk Modulus
0.00 GPa  
99+
160.00 GPa  
11
Young's Modulus
13.50 GPa  
99+
279.00 GPa  
8
Poisson Ratio
0.25  
24
0.21  
33
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
37.40  
4
7.19  
99+
Magnetic Ordering
Paramagnetic  
Antiferromagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
10
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
0.35 nΩ·m  
99+
125.00 nΩ·m  
27
Electrical Conductivity
0.00 106/cm Ω  
99+
0.08 106/cm Ω  
30
Electron Affinity
50.00 kJ/mol  
26
64.30 kJ/mol  
17
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.45 J/(kg K)  
12
Molar Heat Capacity
27.00 J/mol·K  
29
23.35 J/mol·K  
99+
Thermal Conductivity
0.00 W/m·K  
99+
93.90 W/m·K  
17
Critical Temperature
1,323.00 K  
99+
1,907.00 K  
24
Thermal Expansion
10.30 µm/(m·K)  
99+
4.90 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
110.00 kJ/mol  
99+
348.80 kJ/mol  
35
Enthalpy of Fusion
-  
15.31 kJ/mol  
20
Enthalpy of Atomization
350.20 kJ/mol  
37
397.50 kJ/mol  
27
Standard Molar Entropy
63.80 J/mol.K  
22
23.80 J/mol.K  
99+
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