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Potassium
Potassium

Roentgenium
Roentgenium



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Potassium
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Roentgenium

Potassium vs Roentgenium

1 Periodic Table
1.1 Symbol
K
Rg
1.2 Group Number
111
Gadolinium
0 17
1.3 Period Number
47
Lithium
2 7
1.4 Block
s block
d block
1.5 Element Family
Alkali
Unknown
1.6 CAS Number
744009754386242
Aluminium
7429905 54386242
1.7 Space Group Name
Im_ 3m
Not Available
1.8 Space Group Number
229.00194.00
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • In the list of most abundant element Potassium is ranked 7th.
  • Potassium can easily be sliced (chopped) down using knife.
Not Available
2.2 Sources
Found in Minerals, Mining
Synthetically Produced
2.3 History
2.3.1 Who Discovered
Humphry Davy
Gesellschaft für Schwerionenforschung
2.3.2 Discovery
In 1807
In 1994
2.4 Abundance
2.4.1 Abundance In Universe
3 * 10-4 %NA
Thallium
5E-09 0.11
2.4.2 Abundance In Sun
~0.0004 %~-9999 %
Beryllium
1E-08 0.1
2.4.3 Abundance In Meteorites
0.07 %NA
Gold
1.7E-07 22
2.4.4 Abundance In Earth's Crust
1.50 %NA
Radium
9.9E-12 8.1
2.4.5 Abundance In Oceans
0.04 %NA
Protactinium
2E-23 1.1
2.4.6 Abundance In Humans
0.20 %NA
Radium
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • 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.
  • Currently known uses of Roentgenium metal are limited to research purpose only.
3.1.1 Industrial Uses
Ammunition Industry, Chemical Industry
NA
3.1.2 Medical Uses
Pharmaceutical Industry
NA
3.1.3 Other Uses
NA
Research Purposes
3.2 Biological Properties
3.2.1 Toxicity
Toxic
Unknown
3.2.2 Present in Human Body
3.2.3 In Blood
1,620.00 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium
0 1970
3.2.4 In Bone
2,100.00 p.p.m.0.00 p.p.m.
Plutonium
0 170000
4 Physical
4.1 Melting Point
63.65 °CNA
Francium
27 3410
4.2 Boiling Point
774.00 °CNA
Flerovium
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silvery Gray
Silver
4.3.3 Luster
NA
Unknown Luster
4.4 Hardness
4.4.1 Mohs Hardness
0.40NA
Cesium
0.2 8.5
4.4.2 Brinell Hardness
0.36 MPaNA
Cesium
0.14 3490
4.4.3 Vickers Hardness
NANA
Palladium
121 3430
4.5 Speed of Sound
2,000.00 m/sNA
Thallium
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury
1.000933 1.7229
4.6.2 Reflectivity
NANA
Molybdenum
58 97
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
K
Rg
5.2 Isotopes
5.2.1 Known Isotopes
201
Tennessine
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
0.82NA
Francium
0.7 2.54
5.3.2 Sanderson Electronegativity
0.45NA
Cesium
0.22 2.56
5.3.3 Allred Rochow Electronegativity
0.91NA
Cesium
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
0.73NA
Cesium
0.62 2.48
5.3.5 Allen Electronegativity
0.73NA
Cesium
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
3.18NA
Gold
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
418.80 kJ/mol1,022.70 kJ/mol
Cesium
375.7 26130
5.5.2 2nd Energy Level
3,052.00 kJ/mol2,074.40 kJ/mol
Ruthenium
710.2162 28750
5.5.3 3rd Energy Level
4,420.00 kJ/mol3,077.90 kJ/mol
Osmium
1600 34230
5.5.4 4th Energy Level
5,877.00 kJ/mol4,052.40 kJ/mol
Thorium
2780 37066
5.5.5 5th Energy Level
7,975.00 kJ/mol5,306.70 kJ/mol
Dubnium
4305.2 97510
5.5.6 6th Energy Level
9,590.00 kJ/molNA
Seaborgium
5715.8 105800
5.5.7 7th Energy level
11,343.00 kJ/molNA
Bohrium
7226.8 114300
5.5.8 8th Energy Level
14,944.00 kJ/molNA
Hassium
8857.4 125300
5.5.9 9th Energy Level
16,963.70 kJ/molNA
Yttrium
14110 134700
5.5.10 10th Energy Level
48,610.00 kJ/molNA
Strontium
17100 144300
5.5.11 11th Energy Level
54,490.00 kJ/molNA
Yttrium
19900 169988
5.5.12 12th Energy Level
60,730.00 kJ/molNA
Molybdenum
22219 189368
5.5.13 13th Energy Level
68,950.00 kJ/molNA
Molybdenum
26930 76015
5.5.14 14th Energy Level
75,900.00 kJ/molNA
Molybdenum
29196 86450
5.5.15 15th Energy Level
83,080.00 kJ/molNA
Manganese
41987 97510
5.5.16 16th Energy Level
93,400.00 kJ/molNA
Iron
47206 109480
5.5.17 17th Energy Level
99,710.00 kJ/molNA
Cobalt
52737 122200
5.5.18 18th Energy Level
NANA
Nickel
58570 134810
5.5.19 19th Energy Level
NANA
Copper
64702 148700
5.5.20 20th Energy Level
NANA
Molybdenum
80400 171200
5.5.21 21st Energy Level
NANA
Molybdenum
87000 179100
5.5.22 22nd Energy Level
NANA
Molybdenum
93400 184900
5.5.23 23rd Energy Level
NANA
Molybdenum
98420 198800
5.5.24 24th Energy Level
NANA
Molybdenum
104400 195200
5.5.25 25th Energy Level
NANA
Molybdenum
121900 121900
5.5.26 26th Energy Level
NANA
Molybdenum
127700 127700
5.5.27 27th Energy Level
NANA
Molybdenum
133800 133800
5.5.28 28th Energy Level
NANA
Molybdenum
139800 139800
5.5.29 29th Energy Level
NANA
Molybdenum
148100 148100
5.5.30 30th Energy Level
NANA
Molybdenum
154500 154500
5.6 Electrochemical Equivalent
1.46 g/amp-hrNA
Beryllium
0.16812 8.3209
5.7 Electron Work Function
2.30 eVNA
Cesium
2.14 5.65
5.8 Other Chemical Properties
Chemical Stability, Flammability, Ionization, Solubility
NA
6 Atomic
6.1 Atomic Number
19111
Lithium
3 117
6.2 Electron Configuration
[Ar] 4s1
[Rn] 5f14 6d9 7s2
6.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
19111
Lithium
3 117
6.4.2 Number of Neutrons
20161
Lithium
4 184
6.4.3 Number of Electrons
19111
Lithium
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
227.00 pmNA
Beryllium
112 265
6.5.2 Covalent Radius
203.00 pmNA
Beryllium
96 260
6.5.3 Van der Waals Radius
275.00 pmNA
Zinc
139 348
6.6 Atomic Weight
39.10 amu281.00 amu
Lithium
6.94 294
6.7 Atomic Volume
45.46 cm3/molNA
Manganese
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
10.40 (-eV)NA
Francium
8 392.42
6.10 Lattice Constant
532.80 pmNA
Beryllium
228.58 891.25
6.11 Lattice Angles
π/2, π/2, π/2
NA
6.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
0.86 g/cm328.70 g/cm3
Lithium
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
0.83 g/cm3NA
Lithium
0.512 20
7.2 Tensile Strength
NANA
Indium
2.5 11000
7.3 Viscosity
NANA
Mercury
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
NANA
Cerium
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
NANA
Tungsten
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
1.30 GPaNA
Palladium
1.3 222
7.5.2 Bulk Modulus
3.10 GPaNA
Cesium
1.6 462
7.5.3 Young's Modulus
3.53 GPaNA
Cesium
1.7 528
7.6 Poisson Ratio
NANA
Beryllium
0.032 0.47
7.7 Other Mechanical Properties
NA
Unknown
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
0.86NA
Lithium
0.53 4500
8.1.2 Magnetic Ordering
Paramagnetic
Unknown
8.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
Bismuth
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
Unknown
8.2.2 Resistivity
72.00 nΩ·mNA
Thallium
0.18 961
8.2.3 Electrical Conductivity
0.14 106/cm ΩNA
Plutonium
0.00666 0.63
8.2.4 Electron Affinity
48.40 kJ/molNA
Mercury
0 222.8
9 Thermal
9.1 Specific Heat
0.75 J/(kg K)NA
Americium
0.11 3.6
9.2 Molar Heat Capacity
29.60 J/mol·KNA
Beryllium
16.443 62.7
9.3 Thermal Conductivity
102.50 W/m·KNA
Neptunium
6.3 429
9.4 Critical Temperature
2,223.00 KNA
Ytterbium
26.3 3223
9.5 Thermal Expansion
83.30 µm/(m·K)NA
Tungsten
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
77.50 kJ/molNA
Zinc
7.32 799.1
9.6.2 Enthalpy of Fusion
2.32 kJ/molNA
Cesium
2.1 35.23
9.6.3 Enthalpy of Atomization
89.50 kJ/molNA
Mercury
61.5 837
9.7 Standard Molar Entropy
64.70 J/mol.KNA
Beryllium
9.5 198.1