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Mendelevium
Mendelevium

Tungsten
Tungsten



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Mendelevium vs Tungsten

1 Periodic Table
1.1 Symbol
Md
W
1.2 Group Number
NA6
Gadolinium
0 17
1.3 Period Number
76
Lithium
2 7
1.4 Block
f block
d block
1.5 Element Family
Actinide
Transition Metal
1.6 CAS Number
74401117440337
Aluminium
7429905 54386242
1.7 Space Group Name
Not Available
Im_ 3m
1.8 Space Group Number
NA229.00
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • Mendelevium metal is synthetically produced metal.
  • Mendelevium metal has been produced in only trace amount.
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
2.2 Sources
Bombarding Einsteinium with Helium Ions
Earth's crust, Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Lawrence Berkeley National Laboratory
Not Available
2.3.2 Discovery
In 1955
In 1781
2.4 Abundance
2.4.1 Abundance In Universe
NA5 * 10-8 %
Thallium
5E-09 0.11
2.4.2 Abundance In Sun
~-9999 %~0.0000004 %
Beryllium
1E-08 0.1
2.4.3 Abundance In Meteorites
NA0.00 %
Gold
1.7E-07 22
2.4.4 Abundance In Earth's Crust
NA0.00 %
Radium
9.9E-12 8.1
2.4.5 Abundance In Oceans
NA0.00 %
Protactinium
2E-23 1.1
2.4.6 Abundance In Humans
NANA
Radium
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • Currently known uses of Mendelevium metal are limited to research purpose only.
  • Tungsten and its alloys are used in high-temperature applications like welding electrodes, high-temperature furnace, etc.
  • Tungsten carbide is very hard and used in metal working, mining and petroleum industry.
3.1.1 Industrial Uses
NA
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
NA
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Unknown
Non Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium
0 1970
3.2.4 In Bone
0.00 p.p.m.0.00 p.p.m.
Plutonium
0 170000
4 Physical
4.1 Melting Point
827.00 °C3,410.00 °C
Francium
27 3410
4.2 Boiling Point
NA5,660.00 °C
Flerovium
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Unknown
Grayish White
4.3.3 Luster
Metallic
Lustrous
4.4 Hardness
4.4.1 Mohs Hardness
NA7.50
Cesium
0.2 8.5
4.4.2 Brinell Hardness
NA2,000.00 MPa
Cesium
0.14 3490
4.4.3 Vickers Hardness
NA3,430.00 MPa
Palladium
121 3430
4.5 Speed of Sound
NA4,620.00 m/s
Thallium
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury
1.000933 1.7229
4.6.2 Reflectivity
NA62.00 %
Molybdenum
58 97
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
Md
W
5.2 Isotopes
5.2.1 Known Isotopes
1633
Tennessine
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
1.302.36
Francium
0.7 2.54
5.3.2 Sanderson Electronegativity
NA0.98
Cesium
0.22 2.56
5.3.3 Allred Rochow Electronegativity
1.201.40
Cesium
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
NANA
Cesium
0.62 2.48
5.3.5 Allen Electronegativity
NA1.47
Cesium
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2.701.64
Gold
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
635.00 kJ/mol770.00 kJ/mol
Cesium
375.7 26130
5.5.2 2nd Energy Level
1,235.00 kJ/mol1,700.00 kJ/mol
Ruthenium
710.2162 28750
5.5.3 3rd Energy Level
2,470.00 kJ/molNA
Osmium
1600 34230
5.5.4 4th Energy Level
3,840.00 kJ/molNA
Thorium
2780 37066
5.5.5 5th Energy Level
NANA
Dubnium
4305.2 97510
5.5.6 6th Energy Level
NANA
Seaborgium
5715.8 105800
5.5.7 7th Energy level
NANA
Bohrium
7226.8 114300
5.5.8 8th Energy Level
NANA
Hassium
8857.4 125300
5.5.9 9th Energy Level
NANA
Yttrium
14110 134700
5.5.10 10th Energy Level
NANA
Strontium
17100 144300
5.5.11 11th Energy Level
NANA
Yttrium
19900 169988
5.5.12 12th Energy Level
NANA
Molybdenum
22219 189368
5.5.13 13th Energy Level
NANA
Molybdenum
26930 76015
5.5.14 14th Energy Level
NANA
Molybdenum
29196 86450
5.5.15 15th Energy Level
NANA
Manganese
41987 97510
5.5.16 16th Energy Level
NANA
Iron
47206 109480
5.5.17 17th Energy Level
NANA
Cobalt
52737 122200
5.5.18 18th Energy Level
NANA
Nickel
58570 134810
5.5.19 19th Energy Level
NANA
Copper
64702 148700
5.5.20 20th Energy Level
NANA
Molybdenum
80400 171200
5.5.21 21st Energy Level
NANA
Molybdenum
87000 179100
5.5.22 22nd Energy Level
NANA
Molybdenum
93400 184900
5.5.23 23rd Energy Level
NANA
Molybdenum
98420 198800
5.5.24 24th Energy Level
NANA
Molybdenum
104400 195200
5.5.25 25th Energy Level
NANA
Molybdenum
121900 121900
5.5.26 26th Energy Level
NANA
Molybdenum
127700 127700
5.5.27 27th Energy Level
NANA
Molybdenum
133800 133800
5.5.28 28th Energy Level
NANA
Molybdenum
139800 139800
5.5.29 29th Energy Level
NANA
Molybdenum
148100 148100
5.5.30 30th Energy Level
NANA
Molybdenum
154500 154500
5.6 Electrochemical Equivalent
3.21 g/amp-hr1.14 g/amp-hr
Beryllium
0.16812 8.3209
5.7 Electron Work Function
NA4.55 eV
Cesium
2.14 5.65
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Solubility
6 Atomic
6.1 Atomic Number
10174
Lithium
3 117
6.2 Electron Configuration
[Rn] 5f13 7s2
[Xe] 4f14 5d4 6s2
6.3 Crystal Structure
Not Known
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
10174
Lithium
3 117
6.4.2 Number of Neutrons
157110
Lithium
4 184
6.4.3 Number of Electrons
10174
Lithium
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
NA139.00 pm
Beryllium
112 265
6.5.2 Covalent Radius
NA162.00 pm
Beryllium
96 260
6.5.3 Van der Waals Radius
246.00 pm200.00 pm
Zinc
139 348
6.6 Atomic Weight
258.00 amu183.84 amu
Lithium
6.94 294
6.7 Atomic Volume
NA9.53 cm3/mol
Manganese
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
NA140.00 (-eV)
Francium
8 392.42
6.10 Lattice Constant
NA316.52 pm
Beryllium
228.58 891.25
6.11 Lattice Angles
NA
π/2, π/2, π/2
6.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
NA19.25 g/cm3
Lithium
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
NA17.60 g/cm3
Lithium
0.512 20
7.2 Tensile Strength
NA370.00 MPa
Indium
2.5 11000
7.3 Viscosity
NANA
Mercury
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
NANA
Cerium
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
NA0.00 (Pa)
Palladium
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
NA161.00 GPa
Potassium
1.3 222
7.5.2 Bulk Modulus
NA310.00 GPa
Cesium
1.6 462
7.5.3 Young's Modulus
NA411.00 GPa
Cesium
1.7 528
7.6 Poisson Ratio
NA0.28
Beryllium
0.032 0.47
7.7 Other Mechanical Properties
Unknown
Ductile, Malleable
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
NA19.22
Lithium
0.53 4500
8.1.2 Magnetic Ordering
Unknown
Paramagnetic
8.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
Bismuth
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Unknown
Superconductor
8.2.2 Resistivity
NA52.80 nΩ·m
Thallium
0.18 961
8.2.3 Electrical Conductivity
NA0.19 106/cm Ω
Plutonium
0.00666 0.63
8.2.4 Electron Affinity
NA78.60 kJ/mol
Mercury
0 222.8
9 Thermal
9.1 Specific Heat
NA0.13 J/(kg K)
Americium
0.11 3.6
9.2 Molar Heat Capacity
NA24.27 J/mol·K
Beryllium
16.443 62.7
9.3 Thermal Conductivity
NA173.00 W/m·K
Neptunium
6.3 429
9.4 Critical Temperature
NANA
Ytterbium
26.3 3223
9.5 Thermal Expansion
NA4.50 µm/(m·K)
Palladium
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
NA799.10 kJ/mol
Zinc
7.32 799.1
9.6.2 Enthalpy of Fusion
NA35.23 kJ/mol
Cesium
2.1 35.23
9.6.3 Enthalpy of Atomization
NA837.00 kJ/mol
Mercury
61.5 837
9.7 Standard Molar Entropy
NA32.60 J/mol.K
Beryllium
9.5 198.1