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Properties of Uranium and Potassium

Uranium
Potassium
Properties of Potassium & Uranium


Physical Properties
Melting Point
1,132.00 °C   
39
63.65 °C   
99+
Boiling Point
3,818.00 °C   
16
774.00 °C   
99+
Hardness
  
  
Mohs Hardness
6.00   
6
0.40   
23
Brinell Hardness
2,350.00 MPa   
2
0.36 MPa   
99+
Vickers Hardness
1,960.00 MPa   
2
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
3,155.00 m/s   
25
2,000.00 m/s   
99+
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
Chemical Properties
Chemical Formula
U   
K   
Isotopes
  
  
Known Isotopes
25   
14
20   
19
Electronegativity
  
  
Pauling Electronegativity
1.38   
28
0.82   
99+
Sanderson Electronegativity
Not Available   
0.45   
31
Allred Rochow Electronegativity
1.22   
26
0.91   
39
Mulliken-Jaffe Electronegativity
Not Available   
0.73   
23
Allen Electronegativity
Not Available   
0.73   
99+
Electropositivity
  
  
Pauling Electropositivity
2.62   
26
3.18   
3
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol   
99+
418.80 kJ/mol   
99+
2nd Energy Level
1,420.00 kJ/mol   
99+
3,052.00 kJ/mol   
5
3rd Energy Level
1,900.00 kJ/mol   
99+
4,420.00 kJ/mol   
8
Electrochemical Equivalent
1.48 g/amp-hr   
99+
1.46 g/amp-hr   
99+
Electron Work Function
3.63 eV   
30
2.30 eV   
99+
Other Chemical Properties
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces.Radioactivity   
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
Flammable metals have ability to burn or ignite, causing fire or combustion.Flammability, 
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility   
Mechanical Properties
Density
  
  
Density At Room Temperature
19.10 g/cm3   
17
0.86 g/cm3   
99+
Density When Liquid (at m.p.)
17.30 g/cm3   
7
0.83 g/cm3   
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
0.01 (Pa)   
20
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
111.00 GPa   
10
1.30 GPa   
99+
Bulk Modulus
100.00 GPa   
16
3.10 GPa   
99+
Young's Modulus
208.00 GPa   
10
3.53 GPa   
99+
Poisson Ratio
0.23   
30
Not Available   
Other Mechanical Properties
?
Ductility of metals defines their ability to deform under tensile stress; this is often characterized by the metals ability to be stretched into a wire.Ductile, 
?
Malleability of metals defines their ability to deform under compressive stress; this is often characterized by the metals ability to form a thin sheet by hammering or rolling.Malleable   
NA   
Periodic Table
Symbol
U   
K   
Group Number
0   
18
1   
17
Period Number
7   
4   
Block
?
The f-block is in the center-left of a 32-column periodic table but in the footnoted appendage of 18-column tables. These elements are not generally considered as part of any group. They are often called inner transition metals.f block   
?
The s-block is on the left side of the periodic table that includes elements from the first two columns, the alkali metals (group 1) and alkaline earth metals (group 2), plus helium.s block   
Element Family
?
Total 15 metals are included in actinide series, from Actinium to Lawrencium. Actinide series is located under f and d block of the periodic table.Actinide   
?
All alkali metals are placed under group number 1 and s-block of periodic table. These metals are highly reactive and are found in ores of other metals and minerals. Alkali metals can be easily distinguished from others as these metals have only 1 electronAlkali   
Atomic Properties
Atomic Number
92   
26
19   
99+
Atomic Weight
238.03 amu   
21
39.10 amu   
99+
Atomic Volume
12.59 cm3/mol   
40
45.46 cm3/mol   
3
Electron Configuration
[Rn] 5f3 6d1 7s2   
[Ar] 4s1   
Valence Electron Potential
170.00 (-eV)   
4
10.40 (-eV)   
99+
Atom
  
  
Number of Protons
92   
26
19   
99+
Number of Neutrons
146   
13
20   
99+
Number of Electrons
92   
26
19   
99+
Crystal Structure
?
Orthorhombic lattices occur due to stretching a cubic lattice along two of its orthogonal sides. It gets result in a rectangular prism with a rectangular at base. These 3 bases intersect each other at 90°.Orthorhombic (ORTH)   
?
BCC is a basis type of cubic crystal structure. In crystallography, the cubic crystals structure is a crystal system where the unit cell has a cube shaped structure. This is one of the simplest crystal structure found in crystals of metal.Body Centered Cubic (BCC)   
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
156.00 pm   
29
227.00 pm   
3
Covalent Radius
196.00 pm   
14
203.00 pm   
9
Van der Waals Radius
186.00 pm   
33
275.00 pm   
5
Lattice Constant
295.08 pm   
99+
532.80 pm   
12
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Neptunium
  
Calcium
  
Previous Element
Protactinium
  
Aluminium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
0.28 nΩ·m   
99+
72.00 nΩ·m   
37
Electrical Conductivity
0.04 106/cm Ω   
37
0.14 106/cm Ω   
14
Electron Affinity
Not Available   
48.40 kJ/mol   
22
Electrical Property
?
Poor conductor metals have moderate resistance to electric currents. They can conduct electric current through them with very low efficiency.Poor Conductor   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Magnetic Characteristics
  
  
Specific Gravity
18.80   
10
0.86   
99+
Magnetic Ordering
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic   
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.75 J/(kg K)   
6
Thermal Conductivity
27.50 W/m·K   
40
102.50 W/m·K   
15
Critical Temperature
Not Available   
2,223.00 K   
3
Molar Heat Capacity
27.67 J/mol·K   
15
29.60 J/mol·K   
6
Thermal Expansion
13.90 µm/(m·K)   
27
83.30 µm/(m·K)   
3
Standard Molar Entropy
50.20 J/mol.K   
31
64.70 J/mol.K   
18
Enthalpy
  
  
Enthalpy of Vaporization
477.00 kJ/mol   
13
77.50 kJ/mol   
99+
Enthalpy of Fusion
15.48 kJ/mol   
19
2.32 kJ/mol   
99+
Enthalpy of Atomization
489.50 kJ/mol   
14
89.50 kJ/mol   
99+
All >>
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Actinide Metals

Actinide Metals

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