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Zirconium vs Osmium

Zirconium
Osmium
Osmium vs Zirconium


Periodic Table
Symbol
Zr  
Os  
Group Number
4  
14
8  
10
Period Number
5  
6  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440677  
23
7440042  
99+
Space Group Name
P63/mmc  
P63/mmc  
Space Group Number
194.00  
7
194.00  
7
Facts
Interesting Facts
  • Zirconium metal can resist to weak acids.
  • Zirconium metal reacts with oxygen and nitrogen in the atmosphere.
  
  • Osmium metal does not oxidize in air unless it is heated.
  • But if it heated den it forms Osmium Tetroxide, which is highly toxic.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Found As a By-product, Found in Minerals, Mining  
History
  
  
Who Discovered
Martin Heinrich Klaproth  
Smithson Tennant  
Discovery
In 1789  
In 1803  
Abundance
  
  
Abundance In Universe
0.00 %  
14
0.00 %  
22
Abundance In Sun
0.00 %  
16
0.00 %  
25
Abundance In Meteorites
0.00 %  
17
0.00 %  
28
Abundance In Earth's Crust
0.01 %  
14
0.00 %  
99+
Abundance In Oceans
0.00 %  
23
0.00 %  
99+
Abundance In Humans
0.00 %  
18
0.00 %  
24
Uses
Uses & Benefits
  • As this metal does not absorb neutrons; It is used in nuclear power stations.
  • Its oxide is used in ultra strong ceramics. It is also used in manufacturing Crucibles.
  
  • Its has very limited uses and its alloys are very hard and are used in the manufacturing of pen tips, pivots, needles and electrical contacts.
  • It is also used as industrial catalyst to speed up the chemical reaction.
  
Industrial Uses
Aerospace Industry, Ammunition Industry  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
-  
Highly Toxic  
Present in Human Body
Yes  
No  
In Blood
0.01 Blood/mg dm-3  
21
0.00 Blood/mg dm-3  
37
In Bone
0.10 p.p.m.  
28
0.00 p.p.m.  
99+
Physical
Melting Point
1,852.00 °C  
15
3,045.00 °C  
3
Boiling Point
4,377.00 °C  
11
5,027.00 °C  
6
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery Bluish-Gray  
Luster
Lustrous  
Metallic  
Hardness
  
  
Mohs Hardness
5.00  
8
7.00  
3
Brinell Hardness
638.00 MPa  
21
3,490.00 MPa  
1
Vickers Hardness
820.00 MPa  
22
3,920.00 MPa  
1
Speed of Sound
3,800.00 m/s  
27
4,940.00 m/s  
15
Optical Properties
  
  
Refractive Index
2.15  
10
2.07  
12
Reflectivity
70.00 %  
13
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Zr  
Os  
Isotopes
  
  
Known Isotopes
24  
15
35  
4
Electronegativity
  
  
Pauling Electronegativity
1.33  
31
2.20  
5
Sanderson Electronegativity
0.90  
99+
2.20  
8
Allred Rochow Electronegativity
1.22  
27
1.52  
13
Mulliken-Jaffe Electronegativity
1.33  
32
2.20  
6
Allen Electronegativity
1.32  
39
1.65  
22
Electropositivity
  
  
Pauling Electropositivity
2.67  
24
1.80  
99+
Ionization Energies
  
  
1st Energy Level
640.10 kJ/mol  
99+
840.00 kJ/mol  
12
2nd Energy Level
1,270.00 kJ/mol  
99+
1,309.80 kJ/mol  
99+
3rd Energy Level
2,218.00 kJ/mol  
99+
1,600.00 kJ/mol  
99+
4th Energy Level
3,313.00 kJ/mol  
99+
840.00 kJ/mol  
99+
5th Energy Level
7,752.00 kJ/mol  
16
8,400.00 kJ/mol  
10
6th Energy Level
9,500.00 kJ/mol  
21
8,400.00 kJ/mol  
30
7th Energy level
6,400.00 kJ/mol  
99+
8,400.00 kJ/mol  
25
8th Energy Level
6,400.00 kJ/mol  
99+
8,400.00 kJ/mol  
25
9th Energy Level
6,400.00 kJ/mol  
40
5,280.00 kJ/mol  
99+
10th Energy Level
5,730.00 kJ/mol  
99+
8,400.00 kJ/mol  
26
11th Energy Level
6,406.00 kJ/mol  
99+
8,400.00 kJ/mol  
23
12th Energy Level
6,400.00 kJ/mol  
99+
8,400.00 kJ/mol  
99+
13th Energy Level
6,400.00 kJ/mol  
36
8,400.00 kJ/mol  
18
14th Energy Level
640.00 kJ/mol  
99+
840.00 kJ/mol  
99+
15th Energy Level
64,000.00 kJ/mol  
36
84,000.00 kJ/mol  
12
16th Energy Level
64,000.00 kJ/mol  
27
840.00 kJ/mol  
99+
17th Energy Level
640.10 kJ/mol  
99+
840.00 kJ/mol  
29
18th Energy Level
6,400.00 kJ/mol  
38
8,400.00 kJ/mol  
18
19th Energy Level
640.00 kJ/mol  
99+
840.00 kJ/mol  
27
20th Energy Level
640.00 kJ/mol  
39
840.00 kJ/mol  
19
21st Energy Level
640.10 kJ/mol  
99+
840.00 kJ/mol  
39
22nd Energy Level
640.00 kJ/mol  
33
840.00 kJ/mol  
15
23rd Energy Level
640.10 kJ/mol  
99+
840.00 kJ/mol  
99+
24th Energy Level
640.00 kJ/mol  
35
840.00 kJ/mol  
11
25th Energy Level
640.10 kJ/mol  
37
840.00 kJ/mol  
9
26th Energy Level
640.10 kJ/mol  
36
840.00 kJ/mol  
9
27th Energy Level
640.10 kJ/mol  
38
713.30 kJ/mol  
24
28th Energy Level
640.10 kJ/mol  
99+
840.10 kJ/mol  
13
29th Energy Level
640.10 kJ/mol  
99+
840.00 kJ/mol  
13
30th Energy Level
640.10 kJ/mol  
39
840.00 kJ/mol  
9
Electrochemical Equivalent
0.85 g/amp-hr  
99+
1.77 g/amp-hr  
99+
Electron Work Function
4.05 eV  
34
4.83 eV  
13
Other Chemical Properties
Anti Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility  
Chemical Stability, Ionization, Solubility  
Atomic
Atomic Number
40  
99+
76  
40
Electron Configuration
[Kr] 4d2 5s2  
[Xe] 4f14 5d6 6s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
HCP-Crystal-Structure-of-Zirconium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
40  
99+
76  
39
Number of Neutrons
51  
99+
114  
26
Number of Electrons
40  
99+
76  
39
Radius of an Atom
  
  
Atomic Radius
160.00 pm  
29
133.80 pm  
99+
Covalent Radius
175.00 pm  
25
128.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
216.00 pm  
30
Atomic Weight
91.22 amu  
99+
190.23 amu  
35
Atomic Volume
14.10 cm3/mol  
99+
8.49 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Yttrium
  
Rhenium
  
Next Element
Niobium
  
Iridium
  
Valence Electron Potential
80.00 (-eV)  
18
91.40 (-eV)  
12
Lattice Constant
323.20 pm  
99+
273.44 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.59  
25
1.58  
37
Mechanical
Density
  
  
Density At Room Temperature
6.52 g/cm3  
99+
22.59 g/cm3  
9
Density When Liquid (at m.p.)
5.80 g/cm3  
99+
20.00 g/cm3  
11
Tensile Strength
330.00 MPa  
14
1,000.00 MPa  
4
Viscosity
0.00  
12
0.00  
3
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
16
Vapor Pressure at 2000 K
0.00 (Pa)  
21
0.00 (Pa)  
39
Elasticity properties
  
  
Shear Modulus
33.00 GPa  
23
222.00 GPa  
1
Bulk Modulus
91.10 GPa  
18
462.00 GPa  
1
Young's Modulus
88.00 GPa  
24
528.00 GPa  
1
Poisson Ratio
0.34  
10
0.25  
24
Other Mechanical Properties
Ductile, Malleable  
Ductile  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
6.51  
99+
22.57  
11
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
17
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
421.00 nΩ·m  
11
81.20 nΩ·m  
35
Electrical Conductivity
0.02 106/cm Ω  
99+
0.11 106/cm Ω  
21
Electron Affinity
41.10 kJ/mol  
32
106.10 kJ/mol  
10
Thermal
Specific Heat
0.27 J/(kg K)  
19
0.13 J/(kg K)  
40
Molar Heat Capacity
25.36 J/mol·K  
99+
24.70 J/mol·K  
99+
Thermal Conductivity
22.60 W/m·K  
99+
87.60 W/m·K  
19
Critical Temperature
2,128.00 K  
17
3,300.00 K  
3
Thermal Expansion
5.70 µm/(m·K)  
99+
5.10 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
581.60 kJ/mol  
11
627.60 kJ/mol  
8
Enthalpy of Fusion
20.90 kJ/mol  
11
29.30 kJ/mol  
4
Enthalpy of Atomization
598.00 kJ/mol  
12
669.00 kJ/mol  
6
Standard Molar Entropy
39.00 J/mol.K  
99+
32.60 J/mol.K  
99+
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