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Beryllium vs Iridium

Beryllium
Iridium
Iridium vs Beryllium


Periodic Table
Symbol
Be  
Ir  
Group Number
2  
16
9  
9
Period Number
2  
6  
Block
s block  
d block  
Element Family
Alkaline Earth  
Transition Metal  
CAS Number
7440417  
99+
7439885  
99+
Space Group Name
P63/mmc  
Fm_ 3m  
Space Group Number
194.00  
7
225.00  
3
Facts
Interesting Facts
  • Beryllium is best anti corrosion metal.
  • Beryllium is the lightest metal and still it is stronger than steel.
  • It also finds various applications in Nuclear reactors as a reflector.
  
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Louis Nicolas Vauquelin  
Smithson Tennant  
Discovery
In 1797  
In 1803  
Abundance
  
  
Abundance In Universe
0.00 %  
24
0.00 %  
23
Abundance In Sun
0.00 %  
29
0.00 %  
25
Abundance In Meteorites
0.00 %  
99+
0.00 %  
29
Abundance In Earth's Crust
0.00 %  
35
0.00 %  
99+
Abundance In Oceans
0.00 %  
39
-  
Abundance In Humans
0.00 %  
22
0.00 %  
24
Uses
Uses & Benefits
  • Its alloys with copper or nickel are used in manufacturing Gyroscopes, springs, electrical contact and non sparking tools.
  • Beryllium Alloys are used as a material for aircraft, missiles, spacecraft and satellite.
  
  • 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
Aerospace Industry, Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
35
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
37
0.00 p.p.m.  
99+
Physical
Melting Point
1,278.00 °C  
36
2,410.00 °C  
7
Boiling Point
2,970.00 °C  
33
4,527.00 °C  
10
Appearance
  
  
Physical State
Solid  
Solid  
Color
White Gray  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
5.50  
7
6.50  
5
Brinell Hardness
590.00 MPa  
25
1,670.00 MPa  
5
Vickers Hardness
1,670.00 MPa  
9
1,760.00 MPa  
8
Speed of Sound
12,890.00 m/s  
2
4,825.00 m/s  
17
Optical Properties
  
  
Refractive Index
1.56  
34
2.40  
7
Reflectivity
65.00 %  
18
78.00 %  
8
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Be  
Ir  
Isotopes
  
  
Known Isotopes
9  
29
34  
5
Electronegativity
  
  
Pauling Electronegativity
1.57  
25
2.20  
5
Sanderson Electronegativity
1.81  
15
2.20  
8
Allred Rochow Electronegativity
1.47  
15
1.55  
12
Mulliken-Jaffe Electronegativity
1.54  
24
2.20  
6
Allen Electronegativity
1.58  
26
1.68  
20
Electropositivity
  
  
Pauling Electropositivity
2.43  
30
1.80  
99+
Ionization Energies
  
  
1st Energy Level
899.50 kJ/mol  
7
880.00 kJ/mol  
9
2nd Energy Level
1,757.10 kJ/mol  
24
1,600.00 kJ/mol  
36
3rd Energy Level
14,848.70 kJ/mol  
2
2,256.10 kJ/mol  
99+
4th Energy Level
21,006.60 kJ/mol  
2
880.00 kJ/mol  
99+
5th Energy Level
2,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
8
6th Energy Level
1,470.00 kJ/mol  
99+
8,800.00 kJ/mol  
25
7th Energy level
2,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
22
8th Energy Level
2,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
22
9th Energy Level
2,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
21
10th Energy Level
2,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
23
11th Energy Level
2,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
20
12th Energy Level
29,700.00 kJ/mol  
35
8,800.00 kJ/mol  
40
13th Energy Level
2,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
15
14th Energy Level
2,970.00 kJ/mol  
99+
8,800.00 kJ/mol  
14
15th Energy Level
89,900.00 kJ/mol  
5
88,000.00 kJ/mol  
8
16th Energy Level
89,900.00 kJ/mol  
8
88,000.00 kJ/mol  
9
17th Energy Level
2,970.00 kJ/mol  
14
880.00 kJ/mol  
26
18th Energy Level
8,995.00 kJ/mol  
13
8,800.00 kJ/mol  
15
19th Energy Level
899.50 kJ/mol  
22
880.00 kJ/mol  
24
20th Energy Level
899.00 kJ/mol  
12
880.00 kJ/mol  
14
21st Energy Level
2,970.00 kJ/mol  
26
880.00 kJ/mol  
37
22nd Energy Level
899.00 kJ/mol  
10
880.00 kJ/mol  
12
23rd Energy Level
2,970.00 kJ/mol  
31
8,800.00 kJ/mol  
7
24th Energy Level
297.30 kJ/mol  
99+
880.00 kJ/mol  
8
25th Energy Level
2,970.00 kJ/mol  
2
880.00 kJ/mol  
6
26th Energy Level
2,970.00 kJ/mol  
2
880.00 kJ/mol  
6
27th Energy Level
297.30 kJ/mol  
99+
880.00 kJ/mol  
5
28th Energy Level
297.30 kJ/mol  
99+
880.00 kJ/mol  
8
29th Energy Level
2,970.00 kJ/mol  
2
880.00 kJ/mol  
9
30th Energy Level
2,970.00 kJ/mol  
2
880.00 kJ/mol  
6
Electrochemical Equivalent
0.17 g/amp-hr  
99+
1.14 g/amp-hr  
99+
Electron Work Function
4.98 eV  
10
4.55 eV  
18
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes  
Flammable, Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
4  
99+
77  
39
Electron Configuration
[He] 2s2  
[Xe] 4f14 5d7 6s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
HCP-Crystal-Structure-of-Beryllium.jpg#100  
FCC-Crystal-Structure-of-Iridium.jpg#100  
Atom
  
  
Number of Protons
4  
99+
74  
99+
Number of Neutrons
5  
99+
110  
28
Number of Electrons
4  
99+
74  
99+
Radius of an Atom
  
  
Atomic Radius
112.00 pm  
99+
136.00 pm  
99+
Covalent Radius
96.00 pm  
99+
141.00 pm  
99+
Van der Waals Radius
153.00 pm  
99+
202.00 pm  
34
Atomic Weight
9.01 amu  
99+
192.22 amu  
34
Atomic Volume
5.00 cm3/mol  
99+
9.53 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Lithium
  
Osmium
  
Next Element
Sodium
  
Platinum
  
Valence Electron Potential
82.00 (-eV)  
15
140.00 (-eV)  
5
Lattice Constant
228.58 pm  
99+
383.90 pm  
29
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.57  
99+
1.58  
35
Mechanical
Density
  
  
Density At Room Temperature
1.85 g/cm3  
99+
22.56 g/cm3  
10
Density When Liquid (at m.p.)
1.69 g/cm3  
99+
19.00 g/cm3  
13
Tensile Strength
287.00 MPa  
16
2,000.00 MPa  
2
Viscosity
0.00  
17
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
20
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
24
0.00 (Pa)  
26
Elasticity properties
  
  
Shear Modulus
132.00 GPa  
7
210.00 GPa  
2
Bulk Modulus
130.00 GPa  
13
320.00 GPa  
3
Young's Modulus
287.00 GPa  
7
528.00 GPa  
1
Poisson Ratio
0.03  
36
0.26  
22
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
1.85  
99+
21.78  
12
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
16
Susceptibility
0.00  
11
0.00  
5
Electrical Properties
  
  
Electrical Property
Semiconductor  
Conductor  
Resistivity
36.00 nΩ·m  
99+
47.10 nΩ·m  
99+
Electrical Conductivity
0.31 106/cm Ω  
5
0.19 106/cm Ω  
10
Electron Affinity
0.00 kJ/mol  
99+
151.00 kJ/mol  
4
Thermal
Specific Heat
1.82 J/(kg K)  
2
0.13 J/(kg K)  
40
Molar Heat Capacity
16.44 J/mol·K  
99+
25.10 J/mol·K  
99+
Thermal Conductivity
200.00 W/m·K  
6
147.00 W/m·K  
10
Critical Temperature
1,551.00 K  
39
2,719.00 K  
8
Thermal Expansion
11.30 µm/(m·K)  
99+
6.40 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
294.70 kJ/mol  
99+
799.10 kJ/mol  
1
Enthalpy of Fusion
11.72 kJ/mol  
36
35.23 kJ/mol  
1
Enthalpy of Atomization
326.40 kJ/mol  
40
837.00 kJ/mol  
1
Standard Molar Entropy
9.50 J/mol.K  
99+
35.50 J/mol.K  
99+
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