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Properties of Dubnium and Calcium

Dubnium
Calcium
Properties of Calcium & Dubnium


Physical Properties
Melting Point
Not Available   
839.00 °C   
99+
Boiling Point
Not Available   
1,484.00 °C   
99+
Hardness
  
  
Mohs Hardness
Not Available   
1.75   
17
Brinell Hardness
Not Available   
170.00 MPa   
99+
Vickers Hardness
Not Available   
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
Not Available   
3,810.00 m/s   
19
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
Db   
Ca   
Isotopes
  
  
Known Isotopes
10   
28
19   
20
Electronegativity
  
  
Pauling Electronegativity
Not Available   
1.00   
99+
Sanderson Electronegativity
Not Available   
0.95   
24
Allred Rochow Electronegativity
Not Available   
1.04   
34
Mulliken-Jaffe Electronegativity
Not Available   
1.08   
17
Allen Electronegativity
Not Available   
1.03   
39
Electropositivity
  
  
Pauling Electropositivity
Not Available   
3.00   
9
Ionization Energies
  
  
1st Energy Level
664.80 kJ/mol   
38
589.80 kJ/mol   
99+
2nd Energy Level
1,546.70 kJ/mol   
38
1,145.40 kJ/mol   
99+
3rd Energy Level
2,378.40 kJ/mol   
99+
4,912.40 kJ/mol   
7
Electrochemical Equivalent
Not Available   
0.75 g/amp-hr   
99+
Electron Work Function
Not Available   
2.87 eV   
38
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
29.30 g/cm3   
5
1.55 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
1.38 g/cm3   
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
25.50 (Pa)   
3
Vapor Pressure at 2000 K
Not Available   
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
7.40 GPa   
99+
Bulk Modulus
Not Available   
17.00 GPa   
99+
Young's Modulus
Not Available   
20.00 GPa   
99+
Poisson Ratio
Not Available   
0.31   
13
Other Mechanical Properties
Unknown   
NA   
Periodic Table
Symbol
Db   
Ca   
Group Number
5   
13
2   
16
Period Number
7   
4   
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 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
?
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   
?
All alkaline earth metals are placed under group number 2 and s-block of periodic table. These metals are somewhat reactive at standard conditions. Alkaline earth metals appear shiny, silvery-white and are found in the earth’s crust.Alkaline Earth   
Atomic Properties
Atomic Number
105   
13
20   
99+
Atomic Weight
268.00 amu   
10
40.08 amu   
99+
Atomic Volume
Not Available   
29.90 cm3/mol   
7
Electron Configuration
[Rn] 5f14 6d3 7s2   
[Ar] 4s2   
Valence Electron Potential
Not Available   
29.00 (-eV)   
99+
Atom
  
  
Number of Protons
105   
13
20   
99+
Number of Neutrons
157   
7
20   
99+
Number of Electrons
105   
13
20   
99+
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)   
?
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.Face Centered Cubic (FCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Calcium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
139.00 pm   
39
197.00 pm   
6
Covalent Radius
149.00 pm   
35
176.00 pm   
22
Van der Waals Radius
Not Available   
231.00 pm   
19
Lattice Constant
Not Available   
558.84 pm   
9
Lattice Angles
NA   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Seaborgium
  
Scandium
  
Previous Element
Rutherfordium
  
Potassium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
Not Available   
33.60 nΩ·m   
99+
Electrical Conductivity
Not Available   
0.30 106/cm Ω   
6
Electron Affinity
Not Available   
2.37 kJ/mol   
39
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   
4.58   
99+
Magnetic Ordering
Unknown   
?
Diamagnetic metals produce a magnetic field opposite to the applied magnetic field. Thus, they are repelled by magnets and show magnetic nature.Diamagnetic   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
Not Available   
0.63 J/(kg K)   
7
Thermal Conductivity
Not Available   
201.00 W/m·K   
5
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
Not Available   
25.93 J/mol·K   
34
Thermal Expansion
Not Available   
22.30 µm/(m·K)   
19
Standard Molar Entropy
Not Available   
41.60 J/mol.K   
36
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
150.00 kJ/mol   
99+
Enthalpy of Fusion
Not Available   
8.54 kJ/mol   
99+
Enthalpy of Atomization
Not Available   
184.00 kJ/mol   
99+
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