Home
 Compare Metals

Americium vs Iridium

Americium
Iridium
Iridium vs Americium


Periodic Table
Symbol
Am  
Ir  
Group Number
10  
8
9  
9
Period Number
7  
6  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440359  
99+
7439885  
99+
Space Group Name
P63/mmc  
Fm_ 3m  
Space Group Number
194.00  
7
225.00  
3
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).
  
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  
Sources
Obtained By Bombarding Plutonium with Neutrons  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso  
Smithson Tennant  
Discovery
In 1944  
In 1803  
Abundance
  
  
Abundance In Universe
0.00 %  
35
0.00 %  
23
Abundance In Sun
0.00 %  
30
0.00 %  
25
Abundance In Meteorites
0.00 %  
99+
0.00 %  
29
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
-  
-  
Abundance In Humans
0.00 %  
24
0.00 %  
24
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.
  
  • Iridium has an anti corrosion properties and it is used in special alloy with Osmium metal and that alloy is used in pen tips and compass bearings.
  
Industrial Uses
-  
Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
994.00 °C  
99+
2,410.00 °C  
7
Boiling Point
2,607.00 °C  
99+
4,527.00 °C  
10
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery White  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
6.00  
6
6.50  
5
Brinell Hardness
260.00 MPa  
99+
1,670.00 MPa  
5
Vickers Hardness
600.00 MPa  
28
1,760.00 MPa  
8
Speed of Sound
2,750.00 m/s  
99+
4,825.00 m/s  
17
Optical Properties
  
  
Refractive Index
1.30  
99+
2.40  
7
Reflectivity
64.00 %  
19
78.00 %  
8
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Am  
Ir  
Isotopes
  
  
Known Isotopes
16  
23
34  
5
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
2.20  
5
Sanderson Electronegativity
1.30  
25
2.20  
8
Allred Rochow Electronegativity
1.20  
28
1.55  
12
Mulliken-Jaffe Electronegativity
1.30  
33
2.20  
6
Allen Electronegativity
1.30  
40
1.68  
20
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
1.80  
99+
Ionization Energies
  
  
1st Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
9
2nd Energy Level
1,158.00 kJ/mol  
99+
1,600.00 kJ/mol  
36
3rd Energy Level
2,132.00 kJ/mol  
99+
2,256.10 kJ/mol  
99+
4th Energy Level
3,493.00 kJ/mol  
99+
880.00 kJ/mol  
99+
5th Energy Level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
8
6th Energy Level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
25
7th Energy level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
22
8th Energy Level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
22
9th Energy Level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
21
10th Energy Level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
23
11th Energy Level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
20
12th Energy Level
62,400.00 kJ/mol  
11
8,800.00 kJ/mol  
40
13th Energy Level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
15
14th Energy Level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
14
15th Energy Level
62,400.00 kJ/mol  
39
88,000.00 kJ/mol  
8
16th Energy Level
57,800.00 kJ/mol  
99+
88,000.00 kJ/mol  
9
17th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
26
18th Energy Level
5,780.00 kJ/mol  
99+
8,800.00 kJ/mol  
15
19th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
24
20th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
14
21st Energy Level
5,780.00 kJ/mol  
22
880.00 kJ/mol  
37
22nd Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
12
23rd Energy Level
5,780.00 kJ/mol  
23
8,800.00 kJ/mol  
7
24th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
8
25th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
6
26th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
6
27th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
5
28th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
8
29th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
9
30th Energy Level
578.00 kJ/mol  
99+
880.00 kJ/mol  
6
Electrochemical Equivalent
3.02 g/amp-hr  
20
1.14 g/amp-hr  
99+
Electron Work Function
4.30 eV  
25
4.55 eV  
18
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Flammable, Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
95  
23
77  
39
Electron Configuration
[Rn] 5f7 7s2  
[Xe] 4f14 5d7 6s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100  
FCC-Crystal-Structure-of-Iridium.jpg#100  
Atom
  
  
Number of Protons
95  
23
74  
99+
Number of Neutrons
148  
13
110  
28
Number of Electrons
95  
23
74  
99+
Radius of an Atom
  
  
Atomic Radius
173.00 pm  
23
136.00 pm  
99+
Covalent Radius
180.00 pm  
23
141.00 pm  
99+
Van der Waals Radius
244.00 pm  
14
202.00 pm  
34
Atomic Weight
243.00 amu  
20
192.22 amu  
34
Atomic Volume
17.86 cm3/mol  
99+
9.53 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Plutonium
  
Osmium
  
Next Element
Curium
  
Platinum
  
Valence Electron Potential
44.00 (-eV)  
99+
140.00 (-eV)  
5
Lattice Constant
346.81 pm  
99+
383.90 pm  
29
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.58  
34
1.58  
35
Mechanical
Density
  
  
Density At Room Temperature
12.00 g/cm3  
32
22.56 g/cm3  
10
Density When Liquid (at m.p.)
13.67 g/cm3  
26
19.00 g/cm3  
13
Tensile Strength
80.00 MPa  
29
2,000.00 MPa  
2
Viscosity
0.00  
25
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
13
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
24
0.00 (Pa)  
26
Elasticity properties
  
  
Shear Modulus
26.00 GPa  
36
210.00 GPa  
2
Bulk Modulus
44.00 GPa  
32
320.00 GPa  
3
Young's Modulus
58.00 GPa  
36
528.00 GPa  
1
Poisson Ratio
0.30  
14
0.26  
22
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
13.67  
26
21.78  
12
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
16
Susceptibility
0.00  
24
0.00  
5
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
0.69 nΩ·m  
99+
47.10 nΩ·m  
99+
Electrical Conductivity
0.02 106/cm Ω  
99+
0.19 106/cm Ω  
10
Electron Affinity
63.90 kJ/mol  
18
151.00 kJ/mol  
4
Thermal
Specific Heat
0.11 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
62.70 J/mol·K  
1
25.10 J/mol·K  
99+
Thermal Conductivity
10.00 W/m·K  
99+
147.00 W/m·K  
10
Critical Temperature
1,449.00 K  
99+
2,719.00 K  
8
Thermal Expansion
13.60 µm/(m·K)  
32
6.40 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
161.00 kJ/mol  
99+
799.10 kJ/mol  
1
Enthalpy of Fusion
14.39 kJ/mol  
27
35.23 kJ/mol  
1
Enthalpy of Atomization
268.00 kJ/mol  
99+
837.00 kJ/mol  
1
Standard Molar Entropy
63.10 J/mol.K  
23
35.50 J/mol.K  
99+
Periodic Table >>
<< All

Compare Actinide Series

Actinide Series

Actinide Series

» More Actinide Series

Compare Actinide Series

» More Compare Actinide Series
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!