Element 28 of Periodic table is Nickel with atomic number 28, atomic weight 58.6934. Nickel, symbol Ni, has a Face Centered Cubic structure and Gray color. Nickel is a transition metal element. Know everything about Nickel Facts, Physical Properties, Chemical Properties, Electronic configuration, Atomic and Crystal Structure.
Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.
Read key information and facts about element Nickel
Name | Nickel |
Atomic Number | 28 |
Atomic Symbol | Ni |
Atomic Weight | 58.6934 |
Phase | Solid |
Color | Gray |
Classification | transition metal |
Group in Periodic Table | 10 |
Group Name | nickel family |
Period in Periodic Table | 4 |
Block in Periodic Table | d-block |
Electronic Configuration | [Ar] 3d8 4s2 |
Melting Point | 1455 °C |
Boiling Point | 2913 °C |
Electronic Shell Structure | [2, 8, 16, 2] |
CAS Number | CAS7440-02-0 |
Periodic table is arranged by atomic number, number of protons in the nucleus which is same as number of electrons. The atomic number increases from left to right. Periodic table starts at top left ( Atomic number 1) and ends at bottom right (atomic number 118). Therefore you can directly look for atomic number 28 to find Nickel on periodic table.
Another way to read periodic table and locate an element is by using group number (column) and period number (row). To locate Nickel on periodic table look for cross section of group 10 and period 4 in the modern periodic table.
The element Nickel was discovered by Axel Fredrik Cronstedt in year 1751 in Sweden . Nickel derived its name from Swedish kopparnickel, containing the German word Nickel, 'goblin'
The table below shows the abundance of Nickel in Universe, Sun, Meteorites, Earth's Crust, Oceans and Human Body.
Ppb by weight (1ppb =10^-7 %) | |
---|---|
Abundance in Universe | 6e-05 |
Abundance in Sun | 8e-05 |
Abundance in Meteorites | 0.013 |
Abundance in Earth's Crust | 8.9e-05 |
Abundance in Oceans | 2×10-7% |
Abundance in Humans | 1e-07 |
The solid state structure of Nickel is Face Centered Cubic.
The Crystal structure can be described in terms of its unit Cell. The unit Cells repeats itself in three dimensional space to form the structure.
The unit cell is represented in terms of its lattice parameters, which are the lengths of the cell edges Lattice Constants (a, b and c)
a | b | c |
---|---|---|
352.4 | 352.4 | 352.4 pm |
and the angles between them Lattice Angles (alpha, beta and gamma).
alpha | beta | gamma |
---|---|---|
π/2 | π/2 | π/2 |
The positions of the atoms inside the unit cell are described by the set of atomic positions ( xi, yi, zi) measured from a reference lattice point.
The symmetry properties of the crystal are described by the concept of space groups. All possible symmetric arrangements of particles in three-dimensional space are described by the 230 space groups (219 distinct types, or 230 if chiral copies are considered distinct.
Space Group Name | Fm_ 3m |
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Space Group Number | 225 | |
Crystal Structure | Face Centered Cubic |
Nickel atoms have 28 electrons and the electronic shell structure is [2, 8, 16, 2] with Atomic Term Symbol (Quantum Numbers) 3F4.
Atomic Number | 28 |
Number of Electrons (with no charge) | 28 |
Number of Protons | 28 |
Mass Number | 59 |
Number of Neutrons | 31 |
Shell structure (Electrons per energy level) | [2, 8, 16, 2] |
Electron Configuration | [Ar] 3d8 4s2 |
Valence Electrons | 3d8 4s2 |
Oxidation State |
-2;-1
1;2;3;4 |
Atomic Term Symbol (Quantum Numbers) | 3F4 |
Shell Structure of Nickel - Electrons per energy level
n | s | p | d | f | |
---|---|---|---|---|---|
1 | K | 2 | |||
2 | L | 2 | 6 | ||
3 | M | 2 | 6 | 8 | |
4 | N | 2 |
The ground state electronic configuration of Neutral Nickel atom is [Ar] 3d8 4s2. The portion of Nickel configuration that is equivalent to the noble gas of the preceding period, is abbreviated as [Ar]. For atoms with many electrons, this notation can become lengthy and so an abbreviated notation is used.This is important as it is the Valence electrons 3d8 4s2, electrons in the outermost shell that determine the chemical properties of the element.
Complete ground state electronic configuration for the Nickel atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d8 4s2
Nickel atomic radius is 149 pm, while it's covalent radius is 121 pm.
Atomic Radius |
149 pm (1.49 Å) |
Atomic Volume | 6.58884149079 cm3 |
Covalent Radius | 121 pm (1.21 Å) |
Van der Waals Radius | 163 pm |
Neutron Cross Section | 37.2 σa/barns |
The electron affinity of Nickel is 112 kJ/mol
Valence | 2 |
Electronegativity | 1.91 |
ElectronAffinity | 112 kJ/mol |
Refer to table below for Ionization energies of Nickel
Ionization energy number | Enthalpy - kJ/mol |
---|---|
1 | 737.1 |
2 | 1753 |
3 | 3395 |
4 | 5.3×103 |
5 | 7339 |
6 | 1.04×104 |
7 | 1.28×104 |
8 | 1.56×104 |
9 | 1.86×104 |
10 | 21670 |
11 | 30970 |
12 | 3.4×104 |
13 | 3.71×104 |
14 | 4.15×104 |
15 | 4.48×104 |
16 | 4.81×104 |
17 | 55101 |
18 | 58570 |
19 | 1.487×105 |
20 | 1.59×105 |
21 | 1.694×105 |
Refer to below table for Nickel Physical Properties
Density | 8.908 g/cm3 |
Molar Volume | 6.58884149079 cm3 |
Young Modulus | 200 GPa |
Shear Modulus | 76 GPa |
Bulk Modulus | 180 GPa |
Poisson Ratio | 0.31 |
Mohs Hardness | 4 MPa |
Vickers Hardness | 638 MPa |
Brinell Hardness | 700 MPa |
Nickel is Conductor of electricity. Refer to table below for the Electrical properties of Nickel
Electrical Conductivity | 1.4×107 S/m |
Resistivity | 7×10-8 m Ω |
Superconducting Point | N/A |
Thermal Conductivity | 91 W/(m K) |
Thermal Expansion | 0.0000134 K-1 |
Magnetic Type | Ferromagnetic |
Curie Point | 631 K |
Mass Magnetic Susceptibility | N/A |
Molar Magnetic Susceptibility | N/A |
Volume Magnetic Susceptibility | N/A |
Refractive Index | N/A |
Speed of Sound | 4970 m/s |
Refer to table below for Thermal properties of Nickel
Melting Point | 1728 K (1455 °C) |
Boiling Point | 3186 K (2913 °C) |
Critical Temperature | N/A |
Superconducting Point | N/A |
Heat of Fusion | 17.2 kJ/mol |
Heat of Vaporization | 378 kJ/mol |
Heat of Combustion | N/A |
Isotopes of rhodium. Naturally occurring Nickel has 5 stable isotope - 58Ni, 60Ni, 61Ni, 62Ni, 64Ni.
Isotope | Isotope Mass | % Abundance | T half | Decay Mode |
---|---|---|---|---|
48Ni | ||||
49Ni | ||||
50Ni | ||||
51Ni | ||||
52Ni | ||||
53Ni | ||||
54Ni | ||||
55Ni | ||||
56Ni | ||||
57Ni | ||||
58Ni | 68.0769% | Stable | N/A | |
59Ni | ||||
60Ni | 26.2231% | Stable | N/A | |
61Ni | 1.1399% | Stable | N/A | |
62Ni | 3.6345% | Stable | N/A | |
63Ni | ||||
64Ni | 0.9256% | Stable | N/A | |
65Ni | ||||
66Ni | ||||
67Ni | ||||
68Ni | ||||
69Ni | ||||
70Ni | ||||
71Ni | ||||
72Ni | ||||
73Ni | ||||
74Ni | ||||
75Ni | ||||
76Ni | ||||
77Ni | ||||
78Ni |
CAS Number | CAS7440-02-0 |
RTECS Number | RTECSQR5950000 |
DOT Hazard Class | 4.1 |
DOT Numbers | 3089 |
EU Number | N/A |
NFPA Fire Rating | 4 |
NFPA Hazards | N/A |
NFPA Health Rating | 2 |
NFPA Reactivity Rating | 1 |
Autoignition Point | N/A |
Flashpoint | N/A |
List of unique identifiers to search the element in various chemical registry databases
Database | Identifier number |
---|---|
CAS Number - Chemical Abstracts Service (CAS) | CAS7440-02-0 |
CID Number | CID935 |
Gmelin Number | N/A |
NSC Number | N/A |
RTECS Number | RTECSQR5950000 |
Metalloid |
Nonmetals |
Other Nonmetals | |
Halogens | Noble Gas |
Metals |
|
Alkali Metals | Alkaline Earth Metals |
Transition Metals | Post-Transition Metals |
Lanthanide | Actinide |