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Lawrencium vs Molybdenum

Lawrencium
Molybdenum
Molybdenum vs Lawrencium


Periodic Table
Symbol
Lr  
Mo  
Group Number
3  
15
6  
12
Period Number
7  
5  
Block
d block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
22537195  
15
7439987  
99+
Space Group Name
-  
Im_ 3m  
Space Group Number
225.00  
3
229.00  
2
Facts
Interesting Facts
  • It is synthetically produced metal.
  • Radiation hazard can be produce by it.
  
  • Molybdenum is highly reactive metal, hence not found free in nature .
  • Till 18th century Molybdenum element were often mistaken as a carbon or Lead.
  
Sources
Bombarding Californium-252 with Boron Nuclei, Found in Minerals, Mining  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Lawrence Berkeley National Laboratory and Joint Institute for Nuclear Research  
Carl Wilhelm Scheele  
Discovery
In 1961–1971  
In 1778  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
20
Abundance In Sun
-  
0.00 %  
19
Abundance In Meteorites
0.00 %  
99+
0.00 %  
24
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
39
Abundance In Oceans
-  
0.00 %  
9
Abundance In Humans
-  
0.00 %  
17
Uses
Uses & Benefits
  • Currently known uses of Lawrencium metal are limited to research purpose only.
  
  • Its alloys are used to make engine parts, drills, saw blade, etc.
  • Lubricant additive made up of Molybdenum disulfide is commonly used in the industry. It is also used as a catalyst.
  
Industrial Uses
-  
Aerospace Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
-  
Alloys  
Biological Properties
  
  
Toxicity
-  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
31
In Bone
0.00 p.p.m.  
99+
0.70 p.p.m.  
20
Physical
Melting Point
1,627.00 °C  
20
2,617.00 °C  
5
Boiling Point
0.00 °C  
99+
4,612.00 °C  
9
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Gray  
Luster
Unknown Luster  
Metallic  
Hardness
  
  
Mohs Hardness
-  
5.50  
7
Brinell Hardness
500.00 MPa  
28
1,370.00 MPa  
7
Vickers Hardness
500.00 MPa  
35
1,400.00 MPa  
11
Speed of Sound
2,760.00 m/s  
99+
5,400.00 m/s  
9
Optical Properties
  
  
Refractive Index
1.30  
99+
2.00  
15
Reflectivity
65.00 %  
18
58.00 %  
25
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Lr  
Mo  
Isotopes
  
  
Known Isotopes
10  
28
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
2.16  
6
Sanderson Electronegativity
1.30  
25
1.15  
34
Allred Rochow Electronegativity
1.30  
25
1.30  
25
Mulliken-Jaffe Electronegativity
1.30  
33
2.16  
7
Allen Electronegativity
1.30  
40
2.16  
3
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
1.84  
99+
Ionization Energies
  
  
1st Energy Level
470.00 kJ/mol  
99+
684.30 kJ/mol  
37
2nd Energy Level
1,428.00 kJ/mol  
99+
1,560.00 kJ/mol  
38
3rd Energy Level
2,228.00 kJ/mol  
99+
2,618.00 kJ/mol  
99+
4th Energy Level
4,910.00 kJ/mol  
31
4,480.00 kJ/mol  
36
5th Energy Level
4,780.00 kJ/mol  
99+
5,257.00 kJ/mol  
99+
6th Energy Level
4,780.00 kJ/mol  
99+
6,640.80 kJ/mol  
99+
7th Energy level
4,780.00 kJ/mol  
99+
12,125.00 kJ/mol  
13
8th Energy Level
4,780.00 kJ/mol  
99+
13,860.00 kJ/mol  
16
9th Energy Level
4,780.00 kJ/mol  
99+
15,835.00 kJ/mol  
16
10th Energy Level
5,800.00 kJ/mol  
99+
17,980.00 kJ/mol  
18
11th Energy Level
5,800.00 kJ/mol  
99+
20,190.00 kJ/mol  
17
12th Energy Level
47,800.00 kJ/mol  
22
22,219.00 kJ/mol  
38
13th Energy Level
4,780.00 kJ/mol  
99+
26,930.00 kJ/mol  
13
14th Energy Level
1,186.00 kJ/mol  
99+
29,196.00 kJ/mol  
13
15th Energy Level
47,800.00 kJ/mol  
99+
52,490.00 kJ/mol  
99+
16th Energy Level
470.00 kJ/mol  
99+
55,000.00 kJ/mol  
99+
17th Energy Level
1,186.00 kJ/mol  
15
61,400.00 kJ/mol  
9
18th Energy Level
4,780.00 kJ/mol  
99+
67,700.00 kJ/mol  
9
19th Energy Level
1,186.00 kJ/mol  
12
74,000.00 kJ/mol  
9
20th Energy Level
860.00 kJ/mol  
17
80,400.00 kJ/mol  
10
21st Energy Level
1,186.00 kJ/mol  
27
87,000.00 kJ/mol  
9
22nd Energy Level
388.00 kJ/mol  
99+
93,400.00 kJ/mol  
7
23rd Energy Level
1,180.00 kJ/mol  
32
98,420.00 kJ/mol  
6
24th Energy Level
546.10 kJ/mol  
99+
104,400.00 kJ/mol  
2
25th Energy Level
0.00 kJ/mol  
99+
121,900.00 kJ/mol  
1
26th Energy Level
594.70 kJ/mol  
99+
127,700.00 kJ/mol  
1
27th Energy Level
470.00 kJ/mol  
99+
133,800.00 kJ/mol  
1
28th Energy Level
478.00 kJ/mol  
99+
139,800.00 kJ/mol  
1
29th Energy Level
580.00 kJ/mol  
99+
148,100.00 kJ/mol  
1
30th Energy Level
0.00 kJ/mol  
99+
154,500.00 kJ/mol  
1
Electrochemical Equivalent
3.23 g/amp-hr  
12
0.89 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.60 eV  
17
Other Chemical Properties
Ionization, Radioactive Isotopes  
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
103  
15
42  
99+
Electron Configuration
[Rn] 5f14 7s2 7p1  
[Kr] 4d5 5s1  
Crystal Structure
Hexagonal Close Packed (HCP)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
103  
15
42  
99+
Number of Neutrons
157  
8
54  
99+
Number of Electrons
103  
15
42  
99+
Radius of an Atom
  
  
Atomic Radius
162.00 pm  
28
139.00 pm  
99+
Covalent Radius
162.00 pm  
31
154.00 pm  
34
Van der Waals Radius
246.00 pm  
12
200.00 pm  
35
Atomic Weight
266.00 amu  
12
95.95 amu  
99+
Atomic Volume
35.10 cm3/mol  
7
9.40 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Nobelium
  
Niobium
  
Next Element
Rutherfordium
  
Technetium
  
Valence Electron Potential
0.00 (-eV)  
99+
88.60 (-eV)  
13
Lattice Constant
530.00 pm  
14
314.70 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.60  
22
1.03  
99+
Mechanical
Density
  
  
Density At Room Temperature
15.00 g/cm3  
22
10.28 g/cm3  
39
Density When Liquid (at m.p.)
15.60 g/cm3  
20
9.33 g/cm3  
99+
Tensile Strength
80.00 MPa  
29
324.00 MPa  
15
Viscosity
0.00  
25
0.00  
5
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.00 (Pa)  
27
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
126.00 GPa  
8
Bulk Modulus
15.00 GPa  
99+
230.00 GPa  
6
Young's Modulus
210.00 GPa  
10
329.00 GPa  
6
Poisson Ratio
0.32  
12
0.31  
13
Other Mechanical Properties
-  
Ductile, Weldable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
15.60  
22
10.22  
40
Magnetic Ordering
-  
Paramagnetic  
Permeability
0.00 H/m  
13
0.00 H/m  
9
Susceptibility
0.00  
23
0.00  
29
Electrical Properties
  
  
Electrical Property
-  
Semiconductor  
Resistivity
8.37 nΩ·m  
99+
53.40 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.19 106/cm Ω  
11
Electron Affinity
50.00 kJ/mol  
26
71.90 kJ/mol  
16
Thermal
Specific Heat
0.22 J/(kg K)  
29
0.25 J/(kg K)  
21
Molar Heat Capacity
27.00 J/mol·K  
29
24.06 J/mol·K  
99+
Thermal Conductivity
0.00 W/m·K  
99+
138.00 W/m·K  
12
Critical Temperature
1,323.00 K  
99+
2,896.00 K  
6
Thermal Expansion
8.50 µm/(m·K)  
99+
4.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
341.90 kJ/mol  
37
594.10 kJ/mol  
9
Enthalpy of Fusion
-  
27.61 kJ/mol  
5
Enthalpy of Atomization
580.00 kJ/mol  
14
653.00 kJ/mol  
7
Standard Molar Entropy
54.80 J/mol.K  
35
28.70 J/mol.K  
99+
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