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Americium vs Magnesium

Americium
Magnesium
Magnesium vs Americium


Periodic Table
Symbol
Am  
Mg  
Group Number
10  
8
2  
16
Period Number
7  
3  
Block
f block  
s block  
Element Family
Actinide  
Alkaline Earth  
CAS Number
7440359  
99+
7439954  
99+
Space Group Name
P63/mmc  
P63/mmc  
Space Group Number
194.00  
7
194.00  
7
Facts
Interesting Facts
  • Americium metal is produced by bombarding Plutonium with Neutrons.
  • Americium metal was discovered as a by-product while testing an atomic bomb (Manhattan Project).
  
  • Magnesium ions are present in every chlorophyll of every green plant .
  • Controlling Magnesium fire by pouring water on it will result in explosions.
  
Sources
Obtained By Bombarding Plutonium with Neutrons  
By Electrolysis Process, In Ocean, Mining  
History
  
  
Who Discovered
Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, 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
  • Americium metal is used in smoke detection alarms.
  • In the future, this metal has a potential to be used in batteries of spacecrafts.
  
  • 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
Alloys, Nuclear Research, Research Purposes  
Surgical Instruments Manufacturing  
Biological Properties
  
  
Toxicity
Toxic  
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
994.00 °C  
99+
650.00 °C  
99+
Boiling Point
2,607.00 °C  
99+
1,107.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Gray  
Luster
-  
-  
Hardness
  
  
Mohs Hardness
6.00  
6
2.50  
15
Brinell Hardness
260.00 MPa  
99+
260.00 MPa  
99+
Vickers Hardness
600.00 MPa  
28
260.00 MPa  
99+
Speed of Sound
2,750.00 m/s  
99+
4,940.00 m/s  
15
Optical Properties
  
  
Refractive Index
1.30  
99+
1.49  
37
Reflectivity
64.00 %  
19
74.00 %  
9
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Am  
Mg  
Isotopes
  
  
Known Isotopes
16  
23
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
578.00 kJ/mol  
99+
737.70 kJ/mol  
24
2nd Energy Level
1,158.00 kJ/mol  
99+
1,450.70 kJ/mol  
99+
3rd Energy Level
2,132.00 kJ/mol  
99+
7,732.70 kJ/mol  
5
4th Energy Level
3,493.00 kJ/mol  
99+
10,542.50 kJ/mol  
4
5th Energy Level
5,780.00 kJ/mol  
99+
13,630.00 kJ/mol  
3
6th Energy Level
5,780.00 kJ/mol  
99+
18,020.00 kJ/mol  
3
7th Energy level
5,780.00 kJ/mol  
99+
21,711.00 kJ/mol  
3
8th Energy Level
5,780.00 kJ/mol  
99+
25,661.00 kJ/mol  
3
9th Energy Level
5,780.00 kJ/mol  
99+
31,653.00 kJ/mol  
3
10th Energy Level
5,780.00 kJ/mol  
99+
35,458.00 kJ/mol  
5
11th Energy Level
5,780.00 kJ/mol  
99+
169,988.00 kJ/mol  
1
12th Energy Level
62,400.00 kJ/mol  
11
189,368.00 kJ/mol  
1
13th Energy Level
5,780.00 kJ/mol  
99+
7,370.00 kJ/mol  
24
14th Energy Level
5,780.00 kJ/mol  
99+
737.70 kJ/mol  
99+
15th Energy Level
62,400.00 kJ/mol  
39
73,700.00 kJ/mol  
21
16th Energy Level
57,800.00 kJ/mol  
99+
73,770.00 kJ/mol  
16
17th Energy Level
578.00 kJ/mol  
99+
737.70 kJ/mol  
37
18th Energy Level
5,780.00 kJ/mol  
99+
7,370.00 kJ/mol  
27
19th Energy Level
578.00 kJ/mol  
99+
737.70 kJ/mol  
34
20th Energy Level
578.00 kJ/mol  
99+
737.00 kJ/mol  
28
21st Energy Level
5,780.00 kJ/mol  
22
737.70 kJ/mol  
99+
22nd Energy Level
578.00 kJ/mol  
99+
738.00 kJ/mol  
22
23rd Energy Level
5,780.00 kJ/mol  
23
737.70 kJ/mol  
99+
24th Energy Level
578.00 kJ/mol  
99+
737.70 kJ/mol  
20
25th Energy Level
578.00 kJ/mol  
99+
737.70 kJ/mol  
20
26th Energy Level
578.00 kJ/mol  
99+
737.70 kJ/mol  
20
27th Energy Level
578.00 kJ/mol  
99+
737.70 kJ/mol  
19
28th Energy Level
578.00 kJ/mol  
99+
737.70 kJ/mol  
25
29th Energy Level
578.00 kJ/mol  
99+
737.70 kJ/mol  
26
30th Energy Level
578.00 kJ/mol  
99+
737.70 kJ/mol  
20
Electrochemical Equivalent
3.02 g/amp-hr  
20
0.45 g/amp-hr  
99+
Electron Work Function
4.30 eV  
25
3.66 eV  
40
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Corrosion, Highly Inflammable, Ionization, Solubility  
Atomic
Atomic Number
95  
23
12  
99+
Electron Configuration
[Rn] 5f7 7s2  
[Ne] 3s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100  
HCP-Crystal-Structure-of-Magnesium.jpg#100  
Atom
  
  
Number of Protons
95  
23
12  
99+
Number of Neutrons
148  
13
12  
99+
Number of Electrons
95  
23
12  
99+
Radius of an Atom
  
  
Atomic Radius
173.00 pm  
23
160.00 pm  
29
Covalent Radius
180.00 pm  
23
141.00 pm  
99+
Van der Waals Radius
244.00 pm  
14
173.00 pm  
99+
Atomic Weight
243.00 amu  
20
24.31 amu  
99+
Atomic Volume
17.86 cm3/mol  
99+
13.97 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Plutonium
  
Sodium
  
Next Element
Curium
  
Aluminium
  
Valence Electron Potential
44.00 (-eV)  
99+
40.00 (-eV)  
99+
Lattice Constant
346.81 pm  
99+
320.94 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.58  
34
1.62  
15
Mechanical
Density
  
  
Density At Room Temperature
12.00 g/cm3  
32
1.74 g/cm3  
99+
Density When Liquid (at m.p.)
13.67 g/cm3  
26
1.58 g/cm3  
99+
Tensile Strength
80.00 MPa  
29
150.00 MPa  
25
Viscosity
0.00  
25
0.00  
24
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
13
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
24
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
26.00 GPa  
36
17.00 GPa  
99+
Bulk Modulus
44.00 GPa  
32
45.00 GPa  
29
Young's Modulus
58.00 GPa  
36
45.00 GPa  
99+
Poisson Ratio
0.30  
14
0.29  
15
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
13.67  
26
1.74  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
8
Susceptibility
0.00  
24
0.00  
33
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
0.69 nΩ·m  
99+
43.90 nΩ·m  
99+
Electrical Conductivity
0.02 106/cm Ω  
99+
0.23 106/cm Ω  
7
Electron Affinity
63.90 kJ/mol  
18
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.11 J/(kg K)  
99+
1.02 J/(kg K)  
4
Molar Heat Capacity
62.70 J/mol·K  
1
24.87 J/mol·K  
99+
Thermal Conductivity
10.00 W/m·K  
99+
156.00 W/m·K  
8
Critical Temperature
1,449.00 K  
99+
923.00 K  
99+
Thermal Expansion
13.60 µm/(m·K)  
32
24.80 µm/(m·K)  
15
Enthalpy
  
  
Enthalpy of Vaporization
161.00 kJ/mol  
99+
128.70 kJ/mol  
99+
Enthalpy of Fusion
14.39 kJ/mol  
27
8.95 kJ/mol  
99+
Enthalpy of Atomization
268.00 kJ/mol  
99+
148.50 kJ/mol  
99+
Standard Molar Entropy
63.10 J/mol.K  
23
32.70 J/mol.K  
99+
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