Symbol
Mo
  
Hs
  
Period Number
5
  
7
  
Block
d block
  
d block
  
Element Family
Transition Metal
  
Transition Metal
  
Space Group Name
Im_ 3m
  
Not Available
  
Space Group Number
Not Available
  
Interesting Facts
- Molybdenum is highly reactive metal, hence not found free in nature .
- Till 18th century Molybdenum element were often mistaken as a carbon or Lead.
  
- Hassium metals rate of decay is very high.
- Hassium metals 1st sample was synthesized through a nuclear reaction.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Synthetically Produced
  
History
  
  
Who Discovered
Carl Wilhelm Scheele
  
Gesellschaft für Schwerionenforschung
  
Discovery
In 1778
  
In 1984
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~0.0000009 %
  
19
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available
  
Abundance In Humans
Not Available
  
Uses & Benefits
- 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.
  
- Currently known uses of Hassium metal are limited to research purpose only.
  
Industrial Uses
Aerospace Industry, Electrical Industry, Electronic Industry
  
NA
  
Medical Uses
NA
  
NA
  
Other Uses
Alloys
  
Research Purposes
  
Biological Properties
  
  
Toxicity
Toxic
  
Unknown
  
Present in Human Body
Yes
  
No
  
In Blood
0.00 Blood/mg dm-3
  
31
0.00 Blood/mg dm-3
  
37
In Bone
0.70 p.p.m.
  
18
0.00 p.p.m.
  
36
Melting Point
Not Available
  
Boiling Point
Not Available
  
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Gray
  
Silver
  
Luster
Metallic
  
NA
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
1,370.00 MPa
  
7
Not Available
  
Vickers Hardness
1,400.00 MPa
  
6
Not Available
  
Speed of Sound
5,400.00 m/s
  
6
Not Available
  
Optical Properties
  
  
Reflectivity
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Mo
  
Hs
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
684.30 kJ/mol
  
37
733.30 kJ/mol
  
26
2nd Energy Level
1,560.00 kJ/mol
  
37
1,756.00 kJ/mol
  
24
3rd Energy Level
2,618.00 kJ/mol
  
99+
2,827.00 kJ/mol
  
36
4th Energy Level
4,480.00 kJ/mol
  
26
3,637.50 kJ/mol
  
99+
5th Energy Level
5,257.00 kJ/mol
  
32
4,940.00 kJ/mol
  
34
6th Energy Level
6,640.80 kJ/mol
  
22
6,175.10 kJ/mol
  
23
7th Energy level
12,125.00 kJ/mol
  
13
7,535.50 kJ/mol
  
21
8th Energy Level
13,860.00 kJ/mol
  
16
8,857.40 kJ/mol
  
20
9th Energy Level
15,835.00 kJ/mol
  
16
Not Available
  
10th Energy Level
17,980.00 kJ/mol
  
18
Not Available
  
11th Energy Level
20,190.00 kJ/mol
  
17
Not Available
  
12th Energy Level
22,219.00 kJ/mol
  
15
Not Available
  
13th Energy Level
26,930.00 kJ/mol
  
13
Not Available
  
14th Energy Level
29,196.00 kJ/mol
  
13
Not Available
  
15th Energy Level
52,490.00 kJ/mol
  
7
Not Available
  
16th Energy Level
55,000.00 kJ/mol
  
8
Not Available
  
17th Energy Level
61,400.00 kJ/mol
  
9
Not Available
  
18th Energy Level
67,700.00 kJ/mol
  
9
Not Available
  
19th Energy Level
74,000.00 kJ/mol
  
9
Not Available
  
20th Energy Level
80,400.00 kJ/mol
  
10
Not Available
  
21st Energy Level
87,000.00 kJ/mol
  
9
Not Available
  
22nd Energy Level
93,400.00 kJ/mol
  
7
Not Available
  
23rd Energy Level
98,420.00 kJ/mol
  
6
Not Available
  
24th Energy Level
104,400.00 kJ/mol
  
2
Not Available
  
25th Energy Level
121,900.00 kJ/mol
  
1
Not Available
  
26th Energy Level
127,700.00 kJ/mol
  
1
Not Available
  
27th Energy Level
133,800.00 kJ/mol
  
1
Not Available
  
28th Energy Level
139,800.00 kJ/mol
  
1
Not Available
  
29th Energy Level
148,100.00 kJ/mol
  
1
Not Available
  
30th Energy Level
154,500.00 kJ/mol
  
1
Not Available
  
Electrochemical Equivalent
0.89 g/amp-hr
  
99+
Not Available
  
Electron Work Function
Not Available
  
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
  
Ionization, Radioactive Isotopes, Radioactivity
  
Electron Configuration
[Kr] 4d5 5s1
  
[Rn] 5f14 6d6 7s2
  
Crystal Structure
Body Centered Cubic (BCC)
  
Hexagonal Close Packed (HCP)
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
BCC-Crystal-Structure-.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Van der Waals Radius
Not Available
  
Atomic Volume
9.40 cm3/mol
  
99+
Not Available
  
Adjacent Atomic Numbers
  
  
Valence Electron Potential
88.60 (-eV)
  
13
Not Available
  
Lattice Constant
Not Available
  
Lattice Angles
π/2, π/2, π/2
  
NA
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
10.28 g/cm3
  
36
Density When Liquid (at m.p.)
Not Available
  
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
Ductile, Weldable
  
Unknown
  
Magnetic Characteristics
  
  
Specific Gravity
Not Available
  
Magnetic Ordering
Paramagnetic
  
Unknown
  
Electrical Properties
  
  
Electrical Property
Semiconductor
  
Unknown
  
Resistivity
53.40 nΩ·m
  
99+
Not Available
  
Electrical Conductivity
0.19 10
6/cm Ω
  
11
Not Available
  
Electron Affinity
71.90 kJ/mol
  
14
Not Available
  
Specific Heat
0.25 J/(kg K)
  
21
Not Available
  
Molar Heat Capacity
24.06 J/mol·K
  
99+
Not Available
  
Thermal Conductivity
138.00 W/m·K
  
12
Not Available
  
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
4.80 µm/(m·K)
  
99+
Not Available
  
Enthalpy
  
  
Enthalpy of Vaporization
594.10 kJ/mol
  
8
Not Available
  
Enthalpy of Fusion
27.61 kJ/mol
  
5
Not Available
  
Enthalpy of Atomization
653.00 kJ/mol
  
7
Not Available
  
Standard Molar Entropy
28.70 J/mol.K
  
99+
Not Available