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Properties of Actinium and Nickel

Actinium
Nickel
Properties of Nickel & Actinium


Physical Properties
Melting Point
1,227.00 °C   
38
1,453.00 °C   
31
Boiling Point
3,200.00 °C   
26
2,732.00 °C   
38
Hardness
  
  
Mohs Hardness
Not Available   
4.00   
10
Brinell Hardness
Not Available   
667.00 MPa   
18
Vickers Hardness
Not Available   
638.00 MPa   
16
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
72.00 %   
9
Speed of Sound
Not Available   
4,900.00 m/s   
12
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
Ac   
Ni   
Isotopes
  
  
Known Isotopes
29   
10
25   
14
Electronegativity
  
  
Pauling Electronegativity
1.10   
99+
1.91   
10
Sanderson Electronegativity
Not Available   
1.94   
10
Allred Rochow Electronegativity
1.00   
36
1.75   
3
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
Not Available   
1.88   
6
Electropositivity
  
  
Pauling Electropositivity
2.90   
10
2.09   
99+
Ionization Energies
  
  
1st Energy Level
499.00 kJ/mol   
99+
737.10 kJ/mol   
25
2nd Energy Level
1,170.00 kJ/mol   
99+
1,753.00 kJ/mol   
25
3rd Energy Level
1,900.00 kJ/mol   
99+
3,395.00 kJ/mol   
17
Electrochemical Equivalent
2.82 g/amp-hr   
18
1.10 g/amp-hr   
99+
Electron Work Function
Not Available   
5.15 eV   
2
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
10.00 g/cm3   
37
8.91 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
7.81 g/cm3   
29
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
31
Vapor Pressure at 2000 K
Not Available   
19.50 (Pa)   
6
Tensile Strength
Not Available   
345.00 MPa   
11
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
76.00 GPa   
12
Bulk Modulus
Not Available   
180.00 GPa   
9
Young's Modulus
Not Available   
200.00 GPa   
11
Poisson Ratio
Not Available   
0.31   
13
Other Mechanical Properties
NA   
?
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
Ac   
Ni   
Group Number
Not Available   
10   
8
Period Number
7   
4   
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   
?
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
?
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   
?
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
89   
29
28   
99+
Atomic Weight
227.00 amu   
25
58.69 amu   
99+
Atomic Volume
22.54 cm3/mol   
11
6.59 cm3/mol   
99+
Electron Configuration
[Rn] 6d1 7s2   
[Ar] 3d8 4s2 Or [Ar] 3d9 4s1   
Valence Electron Potential
38.60 (-eV)   
99+
42.00 (-eV)   
99+
Atom
  
  
Number of Protons
89   
29
28   
99+
Number of Neutrons
138   
16
31   
99+
Number of Electrons
89   
29
28   
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-Actinium.jpg#100   
FCC-Crystal-Structure-of-Nickel.jpg#100   
Radius of an Atom
  
  
Atomic Radius
195.00 pm   
7
124.00 pm   
99+
Covalent Radius
Not Available   
124.00 pm   
99+
Van der Waals Radius
Not Available   
163.00 pm   
40
Lattice Constant
567.00 pm   
8
352.40 pm   
99+
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
Thorium
  
Copper
  
Previous Element
Radium
  
Cobalt
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
Not Available   
69.30 nΩ·m   
39
Electrical Conductivity
Not Available   
0.14 106/cm Ω   
13
Electron Affinity
Not Available   
112.00 kJ/mol   
6
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
10.07   
28
8.90   
33
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   
Ferromagnetic   
Permeability
Not Available   
0.00 H/m   
2
Susceptibility
Not Available   
600.00   
2
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.44 J/(kg K)   
13
Thermal Conductivity
12.00 W/m·K   
99+
90.90 W/m·K   
18
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
27.20 J/mol·K   
18
26.07 J/mol·K   
31
Thermal Expansion
Not Available   
13.40 µm/(m·K)   
28
Standard Molar Entropy
56.50 J/mol.K   
25
29.90 J/mol.K   
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
371.80 kJ/mol   
20
Enthalpy of Fusion
Not Available   
17.57 kJ/mol   
14
Enthalpy of Atomization
301.00 kJ/mol   
36
422.60 kJ/mol   
17
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