Symbol
K
  
Mt
  
Period Number
4
  
7
  
Block
s block
  
d block
  
Element Family
Alkali
  
Probably Transition
  
Space Group Name
Im_ 3m
  
Not Available
  
Space Group Number
Not Available
  
Interesting Facts
- In the list of most abundant element Potassium is ranked 7th.
- Potassium can easily be sliced (chopped) down using knife.
  
Not Available
  
Sources
Found in Minerals, Mining
  
Bombarding Bi209 with Accelerated Nuclei of Fe58, Synthetically Produced
  
History
  
  
Who Discovered
Humphry Davy
  
Gesellschaft für Schwerionenforschung
  
Discovery
In 1807
  
In 1982
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available
  
Abundance In Humans
Not Available
  
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 Meitnerium metal are limited to research purpose only.
  
Industrial Uses
Ammunition Industry, Chemical Industry
  
NA
  
Medical Uses
Pharmaceutical Industry
  
NA
  
Other Uses
NA
  
NA
  
Biological Properties
  
  
Toxicity
Toxic
  
Unknown
  
Present in Human Body
Yes
  
No
  
In Blood
1,620.00 Blood/mg dm-3
  
2
0.00 Blood/mg dm-3
  
37
In Bone
2,100.00 p.p.m.
  
3
0.00 p.p.m.
  
36
Melting Point
Not Available
  
Boiling Point
Not Available
  
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery Gray
  
Unknown
  
Luster
NA
  
Unknown Luster
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Speed of Sound
2,000.00 m/s
  
99+
Not Available
  
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
K
  
Mt
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Not Available
  
Mulliken-Jaffe Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
418.80 kJ/mol
  
99+
800.80 kJ/mol
  
15
2nd Energy Level
3,052.00 kJ/mol
  
5
1,823.60 kJ/mol
  
17
3rd Energy Level
4,420.00 kJ/mol
  
8
2,904.20 kJ/mol
  
31
4th Energy Level
5,877.00 kJ/mol
  
9
3,859.40 kJ/mol
  
99+
5th Energy Level
7,975.00 kJ/mol
  
8
4,920.80 kJ/mol
  
35
6th Energy Level
9,590.00 kJ/mol
  
13
Not Available
  
7th Energy level
11,343.00 kJ/mol
  
17
Not Available
  
8th Energy Level
14,944.00 kJ/mol
  
13
Not Available
  
9th Energy Level
16,963.70 kJ/mol
  
15
Not Available
  
10th Energy Level
48,610.00 kJ/mol
  
3
Not Available
  
11th Energy Level
54,490.00 kJ/mol
  
4
Not Available
  
12th Energy Level
60,730.00 kJ/mol
  
4
Not Available
  
13th Energy Level
68,950.00 kJ/mol
  
4
Not Available
  
14th Energy Level
75,900.00 kJ/mol
  
5
Not Available
  
15th Energy Level
83,080.00 kJ/mol
  
6
Not Available
  
16th Energy Level
93,400.00 kJ/mol
  
7
Not Available
  
17th Energy Level
99,710.00 kJ/mol
  
8
Not Available
  
Electrochemical Equivalent
1.46 g/amp-hr
  
99+
Not Available
  
Electron Work Function
Not Available
  
Other Chemical Properties
Chemical Stability, Flammability, Ionization, Solubility
  
Ionization, Radioactive Isotopes, Radioactivity
  
Electron Configuration
[Ar] 4s1
  
[Rn] 5f14 6d7 7s2
  
Crystal Structure
Body Centered Cubic (BCC)
  
Face Centered Cubic (FCC)
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
FCC-Crystal-Structure-of-Meitnerium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Van der Waals Radius
Not Available
  
Atomic Volume
45.46 cm3/mol
  
3
Not Available
  
Adjacent Atomic Numbers
  
  
Valence Electron Potential
10.40 (-eV)
  
99+
Not Available
  
Lattice Constant
Not Available
  
Lattice Angles
π/2, π/2, π/2
  
NA
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
0.86 g/cm3
  
99+
Density When Liquid (at m.p.)
0.83 g/cm3
  
99+
Not Available
  
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Not Available
  
Other Mechanical Properties
NA
  
NA
  
Magnetic Characteristics
  
  
Specific Gravity
Not Available
  
Magnetic Ordering
Paramagnetic
  
Paramagnetic
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Unknown
  
Resistivity
Not Available
  
Electrical Conductivity
0.14 10
6/cm Ω
  
14
Not Available
  
Electron Affinity
48.40 kJ/mol
  
22
Not Available
  
Specific Heat
0.75 J/(kg K)
  
6
Not Available
  
Molar Heat Capacity
29.60 J/mol·K
  
6
Not Available
  
Thermal Conductivity
102.50 W/m·K
  
15
Not Available
  
Critical Temperature
Not Available
  
Thermal Expansion
83.30 µm/(m·K)
  
3
Not Available
  
Enthalpy
  
  
Enthalpy of Vaporization
77.50 kJ/mol
  
99+
Not Available
  
Enthalpy of Fusion
2.32 kJ/mol
  
99+
Not Available
  
Enthalpy of Atomization
89.50 kJ/mol
  
99+
Not Available
  
Standard Molar Entropy
64.70 J/mol.K
  
18
Not Available