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Properties of Tantalum and Strontium

Tantalum
Strontium
Properties of Strontium & Tantalum


Physical Properties
Melting Point
2,996.00 °C   
4
769.00 °C   
99+
Boiling Point
5,425.00 °C   
4
1,384.00 °C   
99+
Hardness
  
  
Mohs Hardness
6.50   
5
1.50   
18
Brinell Hardness
440.00 MPa   
28
Not Available   
Vickers Hardness
870.00 MPa   
12
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
78.00 %   
6
Not Available   
Speed of Sound
3,400.00 m/s   
22
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
Ta   
Sr   
Isotopes
  
  
Known Isotopes
31   
8
27   
12
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
0.95   
99+
Sanderson Electronegativity
Not Available   
0.72   
27
Allred Rochow Electronegativity
1.33   
22
0.99   
37
Mulliken-Jaffe Electronegativity
Not Available   
1.00   
18
Allen Electronegativity
1.34   
33
0.96   
40
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
3.05   
7
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol   
18
549.50 kJ/mol   
99+
2nd Energy Level
1,500.00 kJ/mol   
40
1,064.20 kJ/mol   
99+
3rd Energy Level
Not Available   
4,138.00 kJ/mol   
10
Electrochemical Equivalent
1.35 g/amp-hr   
99+
1.64 g/amp-hr   
99+
Electron Work Function
4.25 eV   
21
2.59 eV   
99+
Other Chemical Properties
?
Anti-corrosion metals have the protection on their surfaces which protect them from corroding in corrosive environments.Anti Corrosion, 
?
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   
?
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
16.69 g/cm3   
18
2.64 g/cm3   
99+
Density When Liquid (at m.p.)
15.00 g/cm3   
9
2.38 g/cm3   
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
121.00 (Pa)   
1
Vapor Pressure at 2000 K
0.00 (Pa)   
31
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
69.00 GPa   
13
6.03 GPa   
99+
Bulk Modulus
200.00 GPa   
8
Not Available   
Young's Modulus
186.00 GPa   
13
15.70 GPa   
99+
Poisson Ratio
0.34   
10
0.28   
17
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   
NA   
Periodic Table
Symbol
Ta   
Sr   
Group Number
5   
13
2   
16
Period Number
6   
5   
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
73   
99+
38   
99+
Atomic Weight
180.95 amu   
38
87.62 amu   
99+
Atomic Volume
10.90 cm3/mol   
99+
33.70 cm3/mol   
6
Electron Configuration
[Xe] 4f14 5d3 6s2   
[Kr] 5s2   
Valence Electron Potential
110.00 (-eV)   
7
25.70 (-eV)   
99+
Atom
  
  
Number of Protons
73   
99+
38   
99+
Number of Neutrons
108   
28
50   
99+
Number of Electrons
73   
99+
38   
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-Strontium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
146.00 pm   
35
215.00 pm   
5
Covalent Radius
170.00 pm   
25
195.00 pm   
15
Van der Waals Radius
200.00 pm   
28
249.00 pm   
7
Lattice Constant
330.13 pm   
99+
608.49 pm   
6
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
Tungsten
  
Yttrium
  
Previous Element
Hafnium
  
Rubidium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
131.00 nΩ·m   
25
132.00 nΩ·m   
24
Electrical Conductivity
0.08 106/cm Ω   
27
0.08 106/cm Ω   
26
Electron Affinity
31.00 kJ/mol   
29
5.03 kJ/mol   
38
Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
NA   
Magnetic Characteristics
  
  
Specific Gravity
16.65   
11
2.64   
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
0.14 J/(kg K)   
37
0.30 J/(kg K)   
18
Thermal Conductivity
57.50 W/m·K   
27
35.40 W/m·K   
37
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
25.36 J/mol·K   
99+
26.40 J/mol·K   
28
Thermal Expansion
6.30 µm/(m·K)   
99+
22.50 µm/(m·K)   
18
Standard Molar Entropy
41.50 J/mol.K   
37
55.00 J/mol.K   
26
Enthalpy
  
  
Enthalpy of Vaporization
753.10 kJ/mol   
2
150.00 kJ/mol   
99+
Enthalpy of Fusion
31.40 kJ/mol   
3
9.16 kJ/mol   
38
Enthalpy of Atomization
782.00 kJ/mol   
3
163.20 kJ/mol   
99+
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