It forms above 417 °C simple cubic (metallic)Α-Cobalt
β Allotropes
Not Available
?
It forms below 417 °C hexagonal close packed (hcp) (metallic)Β-Cobalt
γ Allotropes
Not Available
Not Available
Chemical Properties
Chemical Formula
Na
Co
Isotopes
Known Isotopes
17
22
26
13
Electronegativity
Pauling Electronegativity
0.93
99+
1.88
12
Sanderson Electronegativity
0.56
30
2.56
1
Allred Rochow Electronegativity
1.01
35
1.70
5
Mulliken-Jaffe Electronegativity
0.91
21
Not Available
Allen Electronegativity
0.87
99+
1.84
10
Electropositivity
Pauling Electropositivity
3.07
6
2.12
99+
Ionization Energies
1st Energy Level
495.80 kJ/mol
99+
760.40 kJ/mol
19
2nd Energy Level
4,562.00 kJ/mol
4
1,648.00 kJ/mol
31
3rd Energy Level
6,910.30 kJ/mol
6
3,232.00 kJ/mol
22
Electrochemical Equivalent
0.86 g/amp-hr
99+
1.10 g/amp-hr
99+
Electron Work Function
2.75 eV
40
5.00 eV
5
Other Chemical Properties
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability,
?
Corrosion is a process which converts refined metals to their more stable forms, for example, its oxide and hydroxide. This process of metals getting corroded is a gradual destruction of metals by chemical reactions.Corrosion,
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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
?
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
Mechanical Properties
Density
Density At Room Temperature
0.97 g/cm3
99+
4.51 g/cm3
99+
Density When Liquid (at m.p.)
0.93 g/cm3
99+
4.11 g/cm3
99+
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
Not Available
Vapor Pressure at 2000 K
Not Available
0.98 (Pa)
14
Tensile Strength
Not Available
434.00 MPa
9
Viscosity
Not Available
Not Available
Elasticity properties
Shear Modulus
3.30 GPa
99+
44.00 GPa
17
Bulk Modulus
6.30 GPa
99+
110.00 GPa
15
Young's Modulus
10.00 GPa
99+
116.00 GPa
18
Poisson Ratio
Not Available
0.32
12
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
Na
Co
Group Number
1
17
9
9
Period Number
3
4
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 alkali metals are placed under group number 1 and s-block of periodic table. These metals are highly reactive and are found in ores of other metals and minerals. Alkali metals can be easily distinguished from others as these metals have only 1 electronAlkali
?
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
11
99+
22
99+
Atomic Weight
22.99 amu
99+
47.87 amu
99+
Atomic Volume
23.70 cm3/mol
10
10.64 cm3/mol
99+
Electron Configuration
[Ne] 3s1
[Ar] 3d2 4s2
Valence Electron Potential
14.10 (-eV)
99+
95.20 (-eV)
10
Atom
Number of Protons
11
99+
22
99+
Number of Neutrons
12
99+
26
99+
Number of Electrons
11
99+
22
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)
?
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)
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor
?
Poor conductor metals have moderate resistance to electric currents. They can conduct electric current through them with very low efficiency.Poor Conductor
Magnetic Characteristics
Specific Gravity
0.97
99+
4,500.00
1
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