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Properties of Hassium and Neptunium

Hassium
Neptunium
Properties of Neptunium & Hassium


Physical Properties
Melting Point
Not Available   
640.00 °C   
99+
Boiling Point
Not Available   
3,902.00 °C   
13
Hardness
  
  
Mohs Hardness
Not Available   
Not Available   
Brinell Hardness
Not Available   
Not Available   
Vickers Hardness
Not Available   
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
Not Available   
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
Hs   
Np   
Isotopes
  
  
Known Isotopes
7   
31
20   
19
Electronegativity
  
  
Pauling Electronegativity
Not Available   
1.36   
29
Sanderson Electronegativity
Not Available   
Not Available   
Allred Rochow Electronegativity
Not Available   
1.22   
26
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
Not Available   
Not Available   
Electropositivity
  
  
Pauling Electropositivity
Not Available   
2.64   
25
Ionization Energies
  
  
1st Energy Level
733.30 kJ/mol   
26
604.50 kJ/mol   
99+
2nd Energy Level
1,756.00 kJ/mol   
24
1,128.00 kJ/mol   
99+
3rd Energy Level
2,827.00 kJ/mol   
36
1,997.00 kJ/mol   
99+
Electrochemical Equivalent
Not Available   
1.77 g/amp-hr   
39
Electron Work Function
Not Available   
Not Available   
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   
?
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, 
?
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
40.70 g/cm3   
1
19.38 g/cm3   
14
Density When Liquid (at m.p.)
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
Not Available   
0.11 (Pa)   
17
Tensile Strength
Not Available   
125.00 MPa   
14
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
Not Available   
Bulk Modulus
Not Available   
Not Available   
Young's Modulus
Not Available   
Not Available   
Poisson Ratio
Not Available   
Not Available   
Other Mechanical Properties
Unknown   
?
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   
Periodic Table
Symbol
Hs   
Np   
Group Number
8   
10
Not Available   
Period Number
7   
7   
Block
?
The d-block is on the middle of the periodic table and includes elements from columns 3 through 12. These elements are also known as the transition metals because they show a transitivity in their properties i.e. they show a trend in their properties.d 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
?
What is Transition Metal? All transition metals are placed under the d-block from group number 3 to 12. Transition metals show characteristics like malleability, ductility and are good conductor of electricity.Transition Metal   
?
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
108   
10
93   
25
Atomic Weight
269.00 amu   
9
237.00 amu   
22
Atomic Volume
Not Available   
11.62 cm3/mol   
99+
Electron Configuration
[Rn] 5f14 6d6 7s2   
[Rn] 5f4 6d1 7s2   
Valence Electron Potential
Not Available   
96.00 (-eV)   
9
Atom
  
  
Number of Protons
108   
10
93   
25
Number of Neutrons
158   
6
144   
14
Number of Electrons
108   
10
93   
25
Crystal Structure
?
The hexagonal crystal system consists of the 7 point groups such that all their space groups have the hexagonal lattice as underlying lattice. The hexagonal crystal family consists of the 12 point groups such that at least one of their space groups has theHexagonal Close Packed (HCP)   
?
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)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
126.00 pm   
99+
155.00 pm   
30
Covalent Radius
134.00 pm   
99+
190.00 pm   
18
Van der Waals Radius
Not Available   
221.00 pm   
22
Lattice Constant
Not Available   
666.30 pm   
3
Lattice Angles
NA   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Meitnerium
  
Plutonium
  
Previous Element
Bohrium
  
Uranium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
Not Available   
1.22 nΩ·m   
99+
Electrical Conductivity
Not Available   
0.01 106/cm Ω   
99+
Electron Affinity
Not Available   
Not Available   
Electrical Property
Unknown   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Magnetic Characteristics
  
  
Specific Gravity
Not Available   
20.25   
6
Magnetic Ordering
Unknown   
?
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
Not Available   
0.12 J/(kg K)   
40
Thermal Conductivity
Not Available   
6.30 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
Not Available   
29.46 J/mol·K   
8
Thermal Expansion
Not Available   
Not Available   
Standard Molar Entropy
Not Available   
Not Available   
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
Not Available   
Enthalpy of Fusion
Not Available   
3.20 kJ/mol   
99+
Enthalpy of Atomization
Not Available   
Not Available   
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