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Curium vs Magnesium

Curium
Magnesium
Magnesium vs Curium


Periodic Table
Symbol
Cm  
Mg  
Group Number
3  
15
2  
16
Period Number
7  
3  
Block
f block  
s block  
Element Family
Actinide  
Alkaline Earth  
CAS Number
7440519  
36
7439954  
99+
Space Group Name
-  
P63/mmc  
Space Group Number
225.00  
3
194.00  
7
Facts
Interesting Facts
  • Curium metal does not occur free in nature.
  • Curium metal is a synthetically produced metal.
  
  • Magnesium ions are present in every chlorophyll of every green plant .
  • Controlling Magnesium fire by pouring water on it will result in explosions.
  
Sources
Bombarding Plutonium with Helium Ions  
By Electrolysis Process, In Ocean, Mining  
History
  
  
Who Discovered
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso  
Joseph Black  
Discovery
In 1944  
In 1755  
Abundance
  
  
Abundance In Universe
0.00 %  
35
0.06 %  
3
Abundance In Sun
0.00 %  
30
0.07 %  
2
Abundance In Meteorites
0.00 %  
99+
12.00 %  
2
Abundance In Earth's Crust
0.00 %  
99+
2.90 %  
4
Abundance In Oceans
-  
0.13 %  
2
Abundance In Humans
0.00 %  
24
0.03 %  
5
Uses
Uses & Benefits
  • Curium metal is used to provide power to electrical equipment for space missions.
  
  • Magnesium aluminum alloy improves the mechanical strength and welding characteristics and hence it is used in aeroplane and car manufacturing.
  • It is also used to remove sulfur from the molten iron and steel.
  
Industrial Uses
-  
Aerospace Industry, Ammunition Industry, Automobile Industry, Chemical Industry, Pharmaceutical Industry  
Medical Uses
-  
-  
Other Uses
Research Purposes  
Surgical Instruments Manufacturing  
Biological Properties
  
  
Toxicity
-  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
37.80 Blood/mg dm-3  
5
In Bone
0.00 p.p.m.  
99+
1,800.00 p.p.m.  
4
Physical
Melting Point
1,340.00 °C  
34
650.00 °C  
99+
Boiling Point
3,110.00 °C  
31
1,107.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Gray  
Luster
Metallic  
-  
Hardness
  
  
Mohs Hardness
2.00  
17
2.50  
15
Brinell Hardness
320.00 MPa  
40
260.00 MPa  
99+
Vickers Hardness
461.00 MPa  
37
260.00 MPa  
99+
Speed of Sound
2,260.00 m/s  
99+
4,940.00 m/s  
15
Optical Properties
  
  
Refractive Index
1.30  
99+
1.49  
37
Reflectivity
60.00 %  
23
74.00 %  
9
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Cm  
Mg  
Isotopes
  
  
Known Isotopes
15  
24
15  
24
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
1.31  
32
Sanderson Electronegativity
1.30  
25
1.32  
24
Allred Rochow Electronegativity
1.20  
28
1.23  
26
Mulliken-Jaffe Electronegativity
1.30  
33
1.37  
30
Allen Electronegativity
1.30  
40
1.29  
99+
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
2.69  
23
Ionization Energies
  
  
1st Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
24
2nd Energy Level
1,196.00 kJ/mol  
99+
1,450.70 kJ/mol  
99+
3rd Energy Level
2,026.00 kJ/mol  
99+
7,732.70 kJ/mol  
5
4th Energy Level
3,550.00 kJ/mol  
99+
10,542.50 kJ/mol  
4
5th Energy Level
5,810.00 kJ/mol  
99+
13,630.00 kJ/mol  
3
6th Energy Level
5,810.00 kJ/mol  
99+
18,020.00 kJ/mol  
3
7th Energy level
5,810.00 kJ/mol  
99+
21,711.00 kJ/mol  
3
8th Energy Level
5,810.00 kJ/mol  
99+
25,661.00 kJ/mol  
3
9th Energy Level
6,690.00 kJ/mol  
37
31,653.00 kJ/mol  
3
10th Energy Level
5,810.00 kJ/mol  
99+
35,458.00 kJ/mol  
5
11th Energy Level
5,810.00 kJ/mol  
99+
169,988.00 kJ/mol  
1
12th Energy Level
58,100.00 kJ/mol  
19
189,368.00 kJ/mol  
1
13th Energy Level
5,810.00 kJ/mol  
99+
7,370.00 kJ/mol  
24
14th Energy Level
5,810.00 kJ/mol  
40
737.70 kJ/mol  
99+
15th Energy Level
58,100.00 kJ/mol  
99+
73,700.00 kJ/mol  
21
16th Energy Level
58,100.00 kJ/mol  
99+
73,770.00 kJ/mol  
16
17th Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
37
18th Energy Level
5,810.00 kJ/mol  
99+
7,370.00 kJ/mol  
27
19th Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
34
20th Energy Level
581.00 kJ/mol  
99+
737.00 kJ/mol  
28
21st Energy Level
5,810.00 kJ/mol  
20
737.70 kJ/mol  
99+
22nd Energy Level
581.00 kJ/mol  
99+
738.00 kJ/mol  
22
23rd Energy Level
5,810.00 kJ/mol  
20
737.70 kJ/mol  
99+
24th Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
20
25th Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
20
26th Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
20
27th Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
19
28th Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
25
29th Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
26
30th Energy Level
581.00 kJ/mol  
99+
737.70 kJ/mol  
20
Electrochemical Equivalent
3.07 g/amp-hr  
19
0.45 g/amp-hr  
99+
Electron Work Function
4.50 eV  
19
3.66 eV  
40
Other Chemical Properties
Ionization, Radioactive Isotopes  
Corrosion, Highly Inflammable, Ionization, Solubility  
Atomic
Atomic Number
96  
22
12  
99+
Electron Configuration
[Rn] 5f7 6d1 7s2  
[Ne] 3s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
DHCP-Crystal-Structure-of-Curium.jpg#100  
HCP-Crystal-Structure-of-Magnesium.jpg#100  
Atom
  
  
Number of Protons
96  
22
12  
99+
Number of Neutrons
151  
11
12  
99+
Number of Electrons
96  
22
12  
99+
Radius of an Atom
  
  
Atomic Radius
174.00 pm  
22
160.00 pm  
29
Covalent Radius
169.00 pm  
28
141.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
173.00 pm  
99+
Atomic Weight
247.00 amu  
18
24.31 amu  
99+
Atomic Volume
18.28 cm3/mol  
38
13.97 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Americium
  
Sodium
  
Next Element
Berkelium
  
Aluminium
  
Valence Electron Potential
44.50 (-eV)  
39
40.00 (-eV)  
99+
Lattice Constant
336.25 pm  
99+
320.94 pm  
99+
Lattice Angles
-  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.67  
11
1.62  
15
Mechanical
Density
  
  
Density At Room Temperature
13.51 g/cm3  
26
1.74 g/cm3  
99+
Density When Liquid (at m.p.)
13.85 g/cm3  
25
1.58 g/cm3  
99+
Tensile Strength
350.00 MPa  
12
150.00 MPa  
25
Viscosity
0.00  
25
0.00  
24
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
24
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
32.00 GPa  
24
17.00 GPa  
99+
Bulk Modulus
40.00 GPa  
38
45.00 GPa  
29
Young's Modulus
0.00 GPa  
99+
45.00 GPa  
99+
Poisson Ratio
0.35  
9
0.29  
15
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
13.51  
28
1.74  
99+
Magnetic Ordering
Antiferromagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
8
Susceptibility
0.00  
24
0.00  
33
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
1.25 nΩ·m  
99+
43.90 nΩ·m  
99+
Electrical Conductivity
0.13 106/cm Ω  
19
0.23 106/cm Ω  
7
Electron Affinity
0.00 kJ/mol  
99+
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.10 J/(kg K)  
99+
1.02 J/(kg K)  
4
Molar Heat Capacity
27.50 J/mol·K  
21
24.87 J/mol·K  
99+
Thermal Conductivity
11.00 W/m·K  
99+
156.00 W/m·K  
8
Critical Temperature
1,340.00 K  
99+
923.00 K  
99+
Thermal Expansion
11.60 µm/(m·K)  
99+
24.80 µm/(m·K)  
15
Enthalpy
  
  
Enthalpy of Vaporization
331.60 kJ/mol  
40
128.70 kJ/mol  
99+
Enthalpy of Fusion
15.00 kJ/mol  
22
8.95 kJ/mol  
99+
Enthalpy of Atomization
-  
148.50 kJ/mol  
99+
Standard Molar Entropy
52.50 J/mol.K  
36
32.70 J/mol.K  
99+
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