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Properties of Silver and Holmium

Silver
Holmium
Properties of Holmium & Silver


Physical Properties
Melting Point
961.93 °C   
99+
1,461.00 °C   
30
Boiling Point
2,212.00 °C   
99+
2,600.00 °C   
99+
Hardness
  
  
Mohs Hardness
2.50   
14
Not Available   
Brinell Hardness
251.00 MPa   
37
746.00 MPa   
13
Vickers Hardness
229.00 MPa   
30
481.00 MPa   
23
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
97.00 %   
1
Not Available   
Speed of Sound
2,680.00 m/s   
34
2,760.00 m/s   
30
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
Ag   
Ho   
Isotopes
  
  
Known Isotopes
36   
3
34   
5
Electronegativity
  
  
Pauling Electronegativity
1.93   
9
1.23   
37
Sanderson Electronegativity
1.83   
11
Not Available   
Allred Rochow Electronegativity
1.42   
18
1.10   
30
Mulliken-Jaffe Electronegativity
1.47   
15
Not Available   
Allen Electronegativity
1.87   
7
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.07   
99+
2.77   
17
Ionization Energies
  
  
1st Energy Level
731.00 kJ/mol   
27
581.00 kJ/mol   
99+
2nd Energy Level
2,070.00 kJ/mol   
11
1,140.00 kJ/mol   
99+
3rd Energy Level
3,361.00 kJ/mol   
19
2,204.00 kJ/mol   
99+
Electrochemical Equivalent
4.02 g/amp-hr   
7
2.02 g/amp-hr   
29
Electron Work Function
4.26 eV   
20
Not Available   
Other Chemical Properties
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
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   
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
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, 
?
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
10.49 g/cm3   
35
8.79 g/cm3   
99+
Density When Liquid (at m.p.)
9.32 g/cm3   
21
8.34 g/cm3   
26
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
14
0.00 (Pa)   
16
Vapor Pressure at 2000 K
Not Available   
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
30.00 GPa   
23
26.30 GPa   
28
Bulk Modulus
100.00 GPa   
16
40.20 GPa   
32
Young's Modulus
83.00 GPa   
23
64.80 GPa   
31
Poisson Ratio
0.37   
7
0.23   
29
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, 
?
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   
?
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, 
?
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, 
?
Sectility is the ability to be cut into pieces. Metals and paper are sectile.Sectile   
Periodic Table
Symbol
Ag   
Ho   
Group Number
11   
7
Not Available   
Period Number
5   
6   
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 Lanthanide series from Lanthanum to Lutetium. Lanthanide series is located under f and d block of the periodic table.Lanthanide   
Atomic Properties
Atomic Number
47   
99+
67   
99+
Atomic Weight
107.87 amu   
99+
164.93 amu   
99+
Atomic Volume
10.30 cm3/mol   
99+
18.70 cm3/mol   
24
Electron Configuration
[Kr] 4d10 5s1   
[Xe] 4f11 6s2   
Valence Electron Potential
11.40 (-eV)   
99+
47.90 (-eV)   
31
Atom
  
  
Number of Protons
47   
99+
67   
99+
Number of Neutrons
61   
99+
98   
34
Number of Electrons
47   
99+
67   
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)   
?
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)   
Crystal Lattice
FCC-Crystal-Structure-of-Silver.jpg#100   
HCP-Crystal-Structure-of-Holmium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
144.00 pm   
36
176.00 pm   
18
Covalent Radius
145.00 pm   
39
192.00 pm   
17
Van der Waals Radius
172.00 pm   
38
216.00 pm   
24
Lattice Constant
408.53 pm   
20
357.73 pm   
38
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.57   
17
Adjacent Atomic Numbers
  
  
Next Element
Cadmium
  
Erbium
  
Previous Element
Palladium
  
Dysprosium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
15.87 nΩ·m   
99+
814.00 nΩ·m   
4
Electrical Conductivity
0.63 106/cm Ω   
1
0.01 106/cm Ω   
99+
Electron Affinity
125.60 kJ/mol   
5
50.00 kJ/mol   
21
Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Magnetic Characteristics
  
  
Specific Gravity
10.50   
26
8.80   
35
Magnetic Ordering
?
Diamagnetic metals produce a magnetic field opposite to the applied magnetic field. Thus, they are repelled by magnets and show magnetic nature.Diamagnetic   
?
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
0.00   
5
Not Available   
Thermal Properties
Specific Heat
0.24 J/(kg K)   
25
0.16 J/(kg K)   
35
Thermal Conductivity
429.00 W/m·K   
1
16.20 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
25.35 J/mol·K   
99+
27.15 J/mol·K   
19
Thermal Expansion
18.90 µm/(m·K)   
23
11.20 µm/(m·K)   
35
Standard Molar Entropy
42.60 J/mol.K   
35
75.30 J/mol.K   
8
Enthalpy
  
  
Enthalpy of Vaporization
255.10 kJ/mol   
37
241.00 kJ/mol   
38
Enthalpy of Fusion
11.30 kJ/mol   
31
11.76 kJ/mol   
29
Enthalpy of Atomization
284.50 kJ/mol   
37
301.00 kJ/mol   
36
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