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Curium vs Tungsten

Curium
Tungsten
Tungsten vs Curium


Periodic Table
Symbol
Cm  
W  
Group Number
3  
15
6  
12
Period Number
7  
6  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440519  
36
7440337  
99+
Space Group Name
-  
Im_ 3m  
Space Group Number
225.00  
3
229.00  
2
Facts
Interesting Facts
  • Curium metal does not occur free in nature.
  • Curium metal is a synthetically produced metal.
  
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
  
Sources
Bombarding Plutonium with Helium Ions  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso  
-  
Discovery
In 1944  
In 1781  
Abundance
  
  
Abundance In Universe
0.00 %  
35
0.00 %  
28
Abundance In Sun
0.00 %  
30
0.00 %  
23
Abundance In Meteorites
0.00 %  
99+
0.00 %  
39
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
39
Abundance In Oceans
-  
0.00 %  
18
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • Curium metal is used to provide power to electrical equipment for space missions.
  
  • 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.
  
Industrial Uses
-  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
-  
Non 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+
0.00 p.p.m.  
40
Physical
Melting Point
1,340.00 °C  
34
3,410.00 °C  
1
Boiling Point
3,110.00 °C  
31
5,660.00 °C  
1
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Grayish White  
Luster
Metallic  
Lustrous  
Hardness
  
  
Mohs Hardness
2.00  
17
7.50  
2
Brinell Hardness
320.00 MPa  
40
2,000.00 MPa  
4
Vickers Hardness
461.00 MPa  
37
3,430.00 MPa  
3
Speed of Sound
2,260.00 m/s  
99+
4,620.00 m/s  
20
Optical Properties
  
  
Refractive Index
1.30  
99+
2.10  
11
Reflectivity
60.00 %  
23
62.00 %  
21
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Cm  
W  
Isotopes
  
  
Known Isotopes
15  
24
33  
6
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
2.36  
3
Sanderson Electronegativity
1.30  
25
0.98  
99+
Allred Rochow Electronegativity
1.20  
28
1.40  
20
Mulliken-Jaffe Electronegativity
1.30  
33
2.36  
3
Allen Electronegativity
1.30  
40
1.47  
33
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
1.64  
99+
Ionization Energies
  
  
1st Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
16
2nd Energy Level
1,196.00 kJ/mol  
99+
1,700.00 kJ/mol  
30
3rd Energy Level
2,026.00 kJ/mol  
99+
2,045.40 kJ/mol  
99+
4th Energy Level
3,550.00 kJ/mol  
99+
7,700.00 kJ/mol  
8
5th Energy Level
5,810.00 kJ/mol  
99+
7,700.00 kJ/mol  
17
6th Energy Level
5,810.00 kJ/mol  
99+
7,700.00 kJ/mol  
35
7th Energy level
5,810.00 kJ/mol  
99+
7,700.00 kJ/mol  
29
8th Energy Level
5,810.00 kJ/mol  
99+
7,700.00 kJ/mol  
29
9th Energy Level
6,690.00 kJ/mol  
37
7,700.00 kJ/mol  
25
10th Energy Level
5,810.00 kJ/mol  
99+
7,700.00 kJ/mol  
29
11th Energy Level
5,810.00 kJ/mol  
99+
7,700.00 kJ/mol  
28
12th Energy Level
58,100.00 kJ/mol  
19
7,700.00 kJ/mol  
99+
13th Energy Level
5,810.00 kJ/mol  
99+
7,700.00 kJ/mol  
21
14th Energy Level
5,810.00 kJ/mol  
40
770.00 kJ/mol  
99+
15th Energy Level
58,100.00 kJ/mol  
99+
77,000.00 kJ/mol  
18
16th Energy Level
58,100.00 kJ/mol  
99+
77,000.00 kJ/mol  
13
17th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
34
18th Energy Level
5,810.00 kJ/mol  
99+
7,700.00 kJ/mol  
24
19th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
31
20th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
25
21st Energy Level
5,810.00 kJ/mol  
20
770.00 kJ/mol  
99+
22nd Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
19
23rd Energy Level
5,810.00 kJ/mol  
20
770.00 kJ/mol  
99+
24th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
15
25th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
14
26th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
14
27th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
13
28th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
19
29th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
19
30th Energy Level
581.00 kJ/mol  
99+
770.00 kJ/mol  
14
Electrochemical Equivalent
3.07 g/amp-hr  
19
1.14 g/amp-hr  
99+
Electron Work Function
4.50 eV  
19
4.55 eV  
18
Other Chemical Properties
Ionization, Radioactive Isotopes  
Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
96  
22
74  
99+
Electron Configuration
[Rn] 5f7 6d1 7s2  
[Xe] 4f14 5d4 6s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Body Centered Cubic (BCC)  
Crystal Lattice
DHCP-Crystal-Structure-of-Curium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
96  
22
74  
99+
Number of Neutrons
151  
11
110  
28
Number of Electrons
96  
22
74  
99+
Radius of an Atom
  
  
Atomic Radius
174.00 pm  
22
139.00 pm  
99+
Covalent Radius
169.00 pm  
28
162.00 pm  
31
Van der Waals Radius
200.00 pm  
35
200.00 pm  
35
Atomic Weight
247.00 amu  
18
183.84 amu  
37
Atomic Volume
18.28 cm3/mol  
38
9.53 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Americium
  
Tantalum
  
Next Element
Berkelium
  
Rhenium
  
Valence Electron Potential
44.50 (-eV)  
39
140.00 (-eV)  
5
Lattice Constant
336.25 pm  
99+
316.52 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.67  
11
1.29  
99+
Mechanical
Density
  
  
Density At Room Temperature
13.51 g/cm3  
26
19.25 g/cm3  
16
Density When Liquid (at m.p.)
13.85 g/cm3  
25
17.60 g/cm3  
15
Tensile Strength
350.00 MPa  
12
370.00 MPa  
11
Viscosity
0.00  
25
0.00  
1
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
24
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
32.00 GPa  
24
161.00 GPa  
5
Bulk Modulus
40.00 GPa  
38
310.00 GPa  
4
Young's Modulus
0.00 GPa  
99+
411.00 GPa  
4
Poisson Ratio
0.35  
9
0.28  
17
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
13.51  
28
19.22  
18
Magnetic Ordering
Antiferromagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
23
Electrical Properties
  
  
Electrical Property
-  
Superconductor  
Resistivity
1.25 nΩ·m  
99+
52.80 nΩ·m  
99+
Electrical Conductivity
0.13 106/cm Ω  
19
0.19 106/cm Ω  
10
Electron Affinity
0.00 kJ/mol  
99+
78.60 kJ/mol  
15
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
27.50 J/mol·K  
21
24.27 J/mol·K  
99+
Thermal Conductivity
11.00 W/m·K  
99+
173.00 W/m·K  
7
Critical Temperature
1,340.00 K  
99+
3,695.00 K  
1
Thermal Expansion
11.60 µm/(m·K)  
99+
4.50 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
331.60 kJ/mol  
40
799.10 kJ/mol  
1
Enthalpy of Fusion
15.00 kJ/mol  
22
35.23 kJ/mol  
1
Enthalpy of Atomization
-  
837.00 kJ/mol  
1
Standard Molar Entropy
52.50 J/mol.K  
36
32.60 J/mol.K  
99+
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