Home
 Compare Metals

Osmium Potassium Comparison

Osmium
Potassium
Potassium Osmium comparison


Periodic Table
Symbol
Os  
K  
Group Number
8  
10
1  
17
Period Number
6  
4  
Block
d block  
s block  
Element Family
Transition Metal  
Alkali  
CAS Number
7440042  
99+
7440097  
99+
Space Group Name
P63/mmc  
Im_ 3m  
Space Group Number
194.00  
7
229.00  
2
Facts
Interesting Facts
  • Osmium metal does not oxidize in air unless it is heated.
  • But if it heated den it forms Osmium Tetroxide, which is highly toxic.
  
  • In the list of most abundant element Potassium is ranked 7th.
  • Potassium can easily be sliced (chopped) down using knife.
  
Sources
Found As a By-product, Found in Minerals, Mining  
Found in Minerals, Mining  
History
  
  
Who Discovered
Smithson Tennant  
Humphry Davy  
Discovery
In 1803  
In 1807  
Abundance
  
  
Abundance In Universe
0.00 %  
22
0.00 %  
10
Abundance In Sun
0.00 %  
25
0.00 %  
9
Abundance In Meteorites
0.00 %  
28
0.07 %  
9
Abundance In Earth's Crust
0.00 %  
99+
1.50 %  
6
Abundance In Oceans
0.00 %  
99+
0.04 %  
3
Abundance In Humans
0.00 %  
24
0.20 %  
3
Uses
Uses & Benefits
  • 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.
  
  • Potassium’s compounds are in high demand for their application in Fertilizer manufacturing.
  • Potassium carbonate is used in glass manufacturing and Potassium carbonate in manufacturing detergent and body wash.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Ammunition Industry, Chemical Industry  
Medical Uses
-  
Pharmaceutical Industry  
Other Uses
Alloys  
-  
Biological Properties
  
  
Toxicity
Highly Toxic  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
37
1,620.00 Blood/mg dm-3  
2
In Bone
0.00 p.p.m.  
99+
2,100.00 p.p.m.  
3
Physical
Melting Point
3,045.00 °C  
3
63.65 °C  
99+
Boiling Point
5,027.00 °C  
6
774.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Bluish-Gray  
Silvery Gray  
Luster
Metallic  
-  
Hardness
  
  
Mohs Hardness
7.00  
3
0.40  
25
Brinell Hardness
3,490.00 MPa  
1
0.36 MPa  
99+
Vickers Hardness
3,920.00 MPa  
1
100.00 MPa  
99+
Speed of Sound
4,940.00 m/s  
15
2,000.00 m/s  
99+
Optical Properties
  
  
Refractive Index
2.07  
12
1.33  
99+
Reflectivity
80.00 %  
7
72.00 %  
11
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Os  
K  
Isotopes
  
  
Known Isotopes
35  
4
20  
19
Electronegativity
  
  
Pauling Electronegativity
2.20  
5
0.82  
99+
Sanderson Electronegativity
2.20  
8
0.45  
99+
Allred Rochow Electronegativity
1.52  
13
0.91  
40
Mulliken-Jaffe Electronegativity
2.20  
6
0.73  
99+
Allen Electronegativity
1.65  
22
0.73  
99+
Electropositivity
  
  
Pauling Electropositivity
1.80  
99+
3.18  
3
Ionization Energies
  
  
1st Energy Level
840.00 kJ/mol  
12
418.80 kJ/mol  
99+
2nd Energy Level
1,309.80 kJ/mol  
99+
3,052.00 kJ/mol  
5
3rd Energy Level
1,600.00 kJ/mol  
99+
4,420.00 kJ/mol  
8
4th Energy Level
840.00 kJ/mol  
99+
5,877.00 kJ/mol  
18
5th Energy Level
8,400.00 kJ/mol  
10
7,975.00 kJ/mol  
14
6th Energy Level
8,400.00 kJ/mol  
30
9,590.00 kJ/mol  
19
7th Energy level
8,400.00 kJ/mol  
25
11,343.00 kJ/mol  
17
8th Energy Level
8,400.00 kJ/mol  
25
14,944.00 kJ/mol  
13
9th Energy Level
5,280.00 kJ/mol  
99+
16,963.70 kJ/mol  
15
10th Energy Level
8,400.00 kJ/mol  
26
48,610.00 kJ/mol  
3
11th Energy Level
8,400.00 kJ/mol  
23
54,490.00 kJ/mol  
4
12th Energy Level
8,400.00 kJ/mol  
99+
60,730.00 kJ/mol  
15
13th Energy Level
8,400.00 kJ/mol  
18
68,950.00 kJ/mol  
4
14th Energy Level
840.00 kJ/mol  
99+
75,900.00 kJ/mol  
5
15th Energy Level
84,000.00 kJ/mol  
12
83,080.00 kJ/mol  
13
16th Energy Level
840.00 kJ/mol  
99+
93,400.00 kJ/mol  
7
17th Energy Level
840.00 kJ/mol  
29
99,710.00 kJ/mol  
8
18th Energy Level
8,400.00 kJ/mol  
18
4,196.00 kJ/mol  
99+
19th Energy Level
840.00 kJ/mol  
27
419.20 kJ/mol  
99+
20th Energy Level
840.00 kJ/mol  
19
419.00 kJ/mol  
99+
21st Energy Level
840.00 kJ/mol  
39
419.20 kJ/mol  
99+
22nd Energy Level
840.00 kJ/mol  
15
419.00 kJ/mol  
99+
23rd Energy Level
840.00 kJ/mol  
99+
419.20 kJ/mol  
99+
24th Energy Level
840.00 kJ/mol  
11
419.20 kJ/mol  
99+
25th Energy Level
840.00 kJ/mol  
9
419.20 kJ/mol  
99+
26th Energy Level
840.00 kJ/mol  
9
419.20 kJ/mol  
99+
27th Energy Level
713.30 kJ/mol  
24
419.20 kJ/mol  
99+
28th Energy Level
840.10 kJ/mol  
13
419.20 kJ/mol  
99+
29th Energy Level
840.00 kJ/mol  
13
419.20 kJ/mol  
99+
30th Energy Level
840.00 kJ/mol  
9
419.00 kJ/mol  
99+
Electrochemical Equivalent
1.77 g/amp-hr  
99+
1.46 g/amp-hr  
99+
Electron Work Function
4.83 eV  
13
2.30 eV  
99+
Other Chemical Properties
Chemical Stability, Ionization, Solubility  
Chemical Stability, Flammability, Ionization, Solubility  
Atomic
Atomic Number
76  
40
19  
99+
Electron Configuration
[Xe] 4f14 5d6 6s2  
[Ar] 4s1  
Crystal Structure
Hexagonal Close Packed (HCP)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
76  
39
19  
99+
Number of Neutrons
114  
26
20  
99+
Number of Electrons
76  
39
19  
99+
Radius of an Atom
  
  
Atomic Radius
133.80 pm  
99+
227.00 pm  
4
Covalent Radius
128.00 pm  
99+
203.00 pm  
9
Van der Waals Radius
216.00 pm  
30
275.00 pm  
7
Atomic Weight
190.23 amu  
35
39.10 amu  
99+
Atomic Volume
8.49 cm3/mol  
99+
45.46 cm3/mol  
4
Adjacent Atomic Numbers
  
  
Previous Element
Rhenium
  
Aluminium
  
Next Element
Iridium
  
Calcium
  
Valence Electron Potential
91.40 (-eV)  
12
10.40 (-eV)  
99+
Lattice Constant
273.44 pm  
99+
532.80 pm  
13
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.58  
37
1.69  
10
Mechanical
Density
  
  
Density At Room Temperature
22.59 g/cm3  
9
0.86 g/cm3  
99+
Density When Liquid (at m.p.)
20.00 g/cm3  
11
0.83 g/cm3  
99+
Tensile Strength
1,000.00 MPa  
4
16.00 MPa  
99+
Viscosity
0.00  
3
0.00  
9
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
16
0.00 (Pa)  
16
Vapor Pressure at 2000 K
0.00 (Pa)  
39
0.00 (Pa)  
34
Elasticity properties
  
  
Shear Modulus
222.00 GPa  
1
1.30 GPa  
99+
Bulk Modulus
462.00 GPa  
1
3.10 GPa  
99+
Young's Modulus
528.00 GPa  
1
3.53 GPa  
99+
Poisson Ratio
0.25  
24
0.35  
9
Other Mechanical Properties
Ductile  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
22.57  
11
0.86  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
13
Susceptibility
0.00  
17
0.00  
23
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
81.20 nΩ·m  
35
72.00 nΩ·m  
37
Electrical Conductivity
0.11 106/cm Ω  
21
0.14 106/cm Ω  
16
Electron Affinity
106.10 kJ/mol  
10
48.40 kJ/mol  
27
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.75 J/(kg K)  
6
Molar Heat Capacity
24.70 J/mol·K  
99+
29.60 J/mol·K  
8
Thermal Conductivity
87.60 W/m·K  
19
102.50 W/m·K  
15
Critical Temperature
3,300.00 K  
3
2,223.00 K  
14
Thermal Expansion
5.10 µm/(m·K)  
99+
83.30 µm/(m·K)  
3
Enthalpy
  
  
Enthalpy of Vaporization
627.60 kJ/mol  
8
77.50 kJ/mol  
99+
Enthalpy of Fusion
29.30 kJ/mol  
4
2.32 kJ/mol  
99+
Enthalpy of Atomization
669.00 kJ/mol  
6
89.50 kJ/mol  
99+
Standard Molar Entropy
32.60 J/mol.K  
99+
64.70 J/mol.K  
19
Summary >>
<< Thermal

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

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