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Properties of Strontium and Rhodium


Properties of Rhodium & Strontium


Physical Properties

Melting Point
769.00 °C   
99+
1,966.00 °C   
12

Boiling Point
1,384.00 °C   
99+
3,727.00 °C   
17

Hardness
  
  

Mohs Hardness
1.50   
18
6.00   
6

Brinell Hardness
Not Available   
980.00 MPa   
9

Vickers Hardness
Not Available   
1,100.00 MPa   
9

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
Not Available   
84.00 %   
4

Speed of Sound
Not Available   
4,700.00 m/s   
15

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
Sr   
Rh   

Isotopes
  
  

Known Isotopes
27   
12
16   
23

Electronegativity
  
  

Pauling Electronegativity
0.95   
99+
2.28   
3

Sanderson Electronegativity
0.72   
27
Not Available   

Allred Rochow Electronegativity
0.99   
37
1.45   
16

Mulliken-Jaffe Electronegativity
1.00   
18
Not Available   

Allen Electronegativity
0.96   
40
1.56   
24

Electropositivity
  
  

Pauling Electropositivity
3.05   
7
1.72   
99+

Ionization Energies
  
  

1st Energy Level
549.50 kJ/mol   
99+
719.70 kJ/mol   
29

2nd Energy Level
1,064.20 kJ/mol   
99+
1,740.00 kJ/mol   
26

3rd Energy Level
4,138.00 kJ/mol   
10
2,997.00 kJ/mol   
27

Electrochemical Equivalent
1.64 g/amp-hr   
99+
1.28 g/amp-hr   
99+

Electron Work Function
2.59 eV   
99+
4.98 eV   
6

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, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility
  
?
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
  

Mechanical Properties

Density
  
  

Density At Room Temperature
2.64 g/cm3   
99+
12.41 g/cm3   
28

Density When Liquid (at m.p.)
2.38 g/cm3   
99+
10.70 g/cm3   
14

Vapor Pressure
  
  

Vapor Pressure at 1000 K
121.00 (Pa)   
1
Not Available   

Vapor Pressure at 2000 K
Not Available   
0.02 (Pa)   
19

Tensile Strength
Not Available   
951.00 MPa   
5

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
6.03 GPa   
99+
150.00 GPa   
6

Bulk Modulus
Not Available   
275.00 GPa   
5

Young's Modulus
15.70 GPa   
99+
380.00 GPa   
5

Poisson Ratio
0.28   
17
0.26   
22

Other Mechanical Properties
NA   
?
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
  

Periodic Table

Symbol
Sr   
Rh   

Group Number
2   
16
9   
9

Period Number
5   
5   

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 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
  

Element Family
?
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
  
?
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
  

Atomic Properties

Atomic Number
38   
99+
45   
99+

Atomic Weight
87.62 amu   
99+
102.91 amu   
99+

Atomic Volume
33.70 cm3/mol   
6
8.30 cm3/mol   
99+

Electron Configuration
[Kr] 5s2   
[Kr] 4d8 5s1   

Valence Electron Potential
25.70 (-eV)   
99+
64.00 (-eV)   
22

Atom
  
  

Number of Protons
38   
99+
45   
99+

Number of Neutrons
50   
99+
58   
99+

Number of Electrons
38   
99+
45   
99+

Crystal Structure
?
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)
  
?
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
FCC-Crystal-Structure-of-Strontium.jpg#100   
FCC-Crystal-Structure-of-Rhodium.jpg#100   

Radius of an Atom
  
  

Atomic Radius
215.00 pm   
5
134.00 pm   
99+

Covalent Radius
195.00 pm   
15
142.00 pm   
99+

Van der Waals Radius
249.00 pm   
7
200.00 pm   
28

Lattice Constant
608.49 pm   
6
380.34 pm   
27

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
Yttrium
  
Palladium
  

Previous Element
Rubidium
  
Ruthenium
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
132.00 nΩ·m   
24
43.30 nΩ·m   
99+

Electrical Conductivity
0.08 106/cm Ω   
26
0.21 106/cm Ω   
8

Electron Affinity
5.03 kJ/mol   
38
109.70 kJ/mol   
7

Electrical Property
NA   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor
  

Magnetic Characteristics
  
  

Specific Gravity
2.64   
99+
12.41   
20

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
0.30 J/(kg K)   
18
0.24 J/(kg K)   
22

Thermal Conductivity
35.40 W/m·K   
37
150.00 W/m·K   
9

Critical Temperature
Not Available   
Not Available   

Molar Heat Capacity
26.40 J/mol·K   
28
24.98 J/mol·K   
99+

Thermal Expansion
22.50 µm/(m·K)   
18
8.20 µm/(m·K)   
99+

Standard Molar Entropy
55.00 J/mol.K   
26
31.50 J/mol.K   
99+

Enthalpy
  
  

Enthalpy of Vaporization
150.00 kJ/mol   
99+
495.40 kJ/mol   
12

Enthalpy of Fusion
9.16 kJ/mol   
38
21.76 kJ/mol   
10

Enthalpy of Atomization
163.20 kJ/mol   
99+
556.50 kJ/mol   
12

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