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Properties of Potassium and Nobelium

Potassium
Nobelium
Properties of Nobelium & Potassium


Physical Properties
Melting Point
63.65 °C   
99+
827.00 °C   
99+
Boiling Point
774.00 °C   
99+
Not Available   
Hardness
  
  
Mohs Hardness
0.40   
23
Not Available   
Brinell Hardness
0.36 MPa   
99+
Not Available   
Vickers Hardness
Not Available   
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
2,000.00 m/s   
99+
Not Available   
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
K   
No   
Isotopes
  
  
Known Isotopes
20   
19
13   
26
Electronegativity
  
  
Pauling Electronegativity
0.82   
99+
1.30   
32
Sanderson Electronegativity
0.45   
31
Not Available   
Allred Rochow Electronegativity
0.91   
39
1.20   
27
Mulliken-Jaffe Electronegativity
0.73   
23
Not Available   
Allen Electronegativity
0.73   
99+
Not Available   
Electropositivity
  
  
Pauling Electropositivity
3.18   
3
2.70   
22
Ionization Energies
  
  
1st Energy Level
418.80 kJ/mol   
99+
642.00 kJ/mol   
99+
2nd Energy Level
3,052.00 kJ/mol   
5
1,254.00 kJ/mol   
99+
3rd Energy Level
4,420.00 kJ/mol   
8
2,643.00 kJ/mol   
99+
Electrochemical Equivalent
1.46 g/amp-hr   
99+
4.83 g/amp-hr   
4
Electron Work Function
2.30 eV   
99+
Not Available   
Other Chemical Properties
?
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   
?
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
0.86 g/cm3   
99+
Not Available   
Density When Liquid (at m.p.)
0.83 g/cm3   
99+
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
Not Available   
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
1.30 GPa   
99+
Not Available   
Bulk Modulus
3.10 GPa   
99+
Not Available   
Young's Modulus
3.53 GPa   
99+
Not Available   
Poisson Ratio
Not Available   
Not Available   
Other Mechanical Properties
NA   
Unknown   
Periodic Table
Symbol
K   
No   
Group Number
1   
17
Not Available   
Period Number
4   
7   
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   
?
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   
Element Family
?
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   
?
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   
Atomic Properties
Atomic Number
19   
99+
102   
16
Atomic Weight
39.10 amu   
99+
259.00 amu   
13
Atomic Volume
45.46 cm3/mol   
3
Not Available   
Electron Configuration
[Ar] 4s1   
[Rn] 5f14 7s2   
Valence Electron Potential
10.40 (-eV)   
99+
26.00 (-eV)   
99+
Atom
  
  
Number of Protons
19   
99+
102   
16
Number of Neutrons
20   
99+
157   
7
Number of Electrons
19   
99+
102   
16
Crystal Structure
?
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)   
?
The crustal structure for this metal is Unknown or not yet discoveredNot Known   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
Unknown-Crystal-Structure-of-Nobelium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
227.00 pm   
3
Not Available   
Covalent Radius
203.00 pm   
9
Not Available   
Van der Waals Radius
275.00 pm   
5
246.00 pm   
8
Lattice Constant
532.80 pm   
12
Not Available   
Lattice Angles
π/2, π/2, π/2   
NA   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Calcium
  
Lawrencium
  
Previous Element
Aluminium
  
Mendelevium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
72.00 nΩ·m   
37
Not Available   
Electrical Conductivity
0.14 106/cm Ω   
14
Not Available   
Electron Affinity
48.40 kJ/mol   
22
Not Available   
Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Unknown   
Magnetic Characteristics
  
  
Specific Gravity
0.86   
99+
Not Available   
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   
Unknown   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.75 J/(kg K)   
6
Not Available   
Thermal Conductivity
102.50 W/m·K   
15
Not Available   
Critical Temperature
2,223.00 K   
3
Not Available   
Molar Heat Capacity
29.60 J/mol·K   
6
Not Available   
Thermal Expansion
83.30 µm/(m·K)   
3
Not Available   
Standard Molar Entropy
64.70 J/mol.K   
18
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   
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