facet 27 of routine table is Cobalt through atomic number 27, atomic load 58.9332. Cobalt, prize Co, has actually a basic Hexagonal structure and also Gray color. Cobalt is a shift metal element. Know everything about Cobalt Facts, physical Properties, chemical Properties, electronic configuration, Atomic and Crystal Structure.


Cobalt is a chemical facet with prize Co and also atomic number 27. Like nickel, cobalt in the Earth"s crust is found only in chemically combined form, conserve for little deposits uncovered in alloys of herbal meteoric iron. The free element, developed by reductive smelting, is a hard, lustrous, silver-gray metal.

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Cobalt Facts

Read vital information and also facts about element Cobalt

name Cobalt
atomic Number 27
atomic Symbol Co
Atomic load 58.9332
phase Solid
color Gray
Classification transition metal
team in regular Table 9
Group Name cobalt family members
period in periodic Table 4
Block in regular Table d-block
Electronic Configuration 3d7 4s2
Melting allude 1495 °C
Boiling suggest 2927 °C
Electronic covering Structure <2, 8, 15, 2>
CAS Number CAS7440-48-4

How to situate Cobalt on routine Table

Periodic table is i ordered it by atomic number, number of protons in the nucleus i beg your pardon is very same as variety of electrons. The atomic number rises from left to right. Routine table start at height left ( atomic number 1) and also ends at bottom appropriate (atomic number 118). Therefore you can directly look for atomic number 27 to discover Cobalt on regular table.

Another means to read periodic table and also locate an element is through using group number (column) and period number (row). To locate Cobalt on periodic table look because that cross ar of group 9 and duration 4 in the contemporary periodic table.

explore Interactive regular Table come Understand and Learn Cool trends

Table the Contents

Physical Properties
Thermal Properties
Crystal Structure
Atomic & orbit Properties
Chemical Properties
Health and Safety Parameters and Guidelines
Compare Cobalt with various other elements

Cobalt History

The aspect Cobalt was found by Georg Brandt in year 1735 in Sweden . Cobalt obtained its name from the German native Kobold, meaning "goblin"

Cobalt Presence: diversity in Nature and also Around Us

The table listed below shows the abundance of Cobalt in Universe, Sun, Meteorites, Earth"s Crust, Oceans and Human Body.

Ppb by weight (1ppb =10^-7 %)
variety in universe 3e-06
abundance in sun 4e-06
diversity in Meteorites 0.00059
Abundance in Earth"s late 3e-05
abundance in oceans 8×10-9%
abundance in human beings 2×10-6%

Crystal framework of Cobalt

The solid state framework of Cobalt is Simple Hexagonal.

The decision structure deserve to be described in regards to its unit Cell. The unit cells repeats chin in three dimensional an are to type the structure.

Unit cell Parameters

The unit cabinet is represented in regards to its lattice parameters, which space the lengths the the cell edges Lattice Constants (a, b and also c)

a b c
250.71 250.71 406.95 pm

and the angles in between them Lattice angles (alpha, beta and gamma).

alpha beta gamma
π/2 π/2 2 π/3

The positions of the atoms inside the unit cabinet are defined by the collection of atomic positions ( xi, yi, zi) measured native a reference lattice point.

The symmetry properties of the decision are defined by the concept of room groups. All possible symmetric arrangements of particles in three-dimensional an are are described by the 230 an are groups (219 distinct types, or 230 if chiral duplicates are thought about distinct.

room Group name P63/mmc
an are Group Number 194
Crystal structure Simple Hexagonal

Cobalt Atomic and Orbital Properties

Cobalt atoms have 27 electrons and also the digital shell framework is <2, 8, 15, 2> through Atomic hatchet Symbol (Quantum Numbers) 4F9/2.

atomic Number 27
Number of electrons (with no charge) 27
Number of Protons 27
Mass Number 59
Number that Neutrons 32
Shell framework (Electrons per power level) <2, 8, 15, 2>
Electron configuration 3d7 4s2
Valence Electrons 3d7 4s2
Oxidation State -3;-1 1;2;3;4;5
Atomic ax Symbol (Quantum Numbers) 4F9/2

Shell structure of Cobalt - electron per energy level


Ground State electronic Configuration the Cobalt - neutral Cobalt atom

The floor state electronic configuration that Neutral Cobalt atom is 3d7 4s2. The section of Cobalt configuration the is tantamount to the noble gas that the preceding period, is abbreviated together . For atoms with plenty of electrons, this notation have the right to become an extensive and so an abbreviated notation is used.This is crucial as the is the Valence electron 3d7 4s2, electrons in the outermost shell that identify the chemical properties that the element.

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Unabbreviated electronic configuration that neutral Cobalt

Complete floor state digital configuration for the Cobalt atom, Unabbreviated digital configuration

1s2 2s2 2p6 3s2 3p6 3d7 4s2

Atomic structure of Cobalt

Cobalt atom radius is 152 pm, when it"s covalent radius is 126 pm.

atom Radius

152 pm (1.52 Å)

Atomic Volume 6.62170786517 cm3
Covalent Radius 126 pm (1.26 Å)
van der Waals Radius N/A
spirit Cross ar 37.2 σa/barns

Atomic Spectrum of Cobalt


Cobalt chemical Properties: Cobalt Ionization Energies and also electron affinity

The electron affinity that Cobalt is 63.7 kJ/mol

Valence 4
Electronegativity 1.88
ElectronAffinity 63.7 kJ/mol

Ionization energy of Cobalt

Refer come table below for Ionization energies the Cobalt

Ionization energy number Enthalpy - kJ/mol
1 760.4
2 1648
3 3232
4 4950
5 7670
6 9840
7 12440
8 15230
9 17959
10 26570
11 2.94×104
12 3.24×104
13 3.66×104
14 3.97×104
15 4.28×104
16 49396
17 52737
18 134810
19 145170
20 1.547×105
21 1.674×105

Cobalt physical Properties

Refer to below table for Cobalt physics Properties

density 8.9 g/cm3
Molar Volume 6.62170786517 cm3

Elastic Properties

Young Modulus 209 GPa
Shear Modulus 75 GPa
bulk Modulus 180 GPa
Poisson ratio 0.31

Hardness of Cobalt - exam to measure up of Hardness of Element

Mohs Hardness 5 MPa
Vickers Hardness 1043 MPa
Brinell Hardness 700 MPa

Cobalt electrical Properties

Cobalt is Conductor that electricity. Refer to table listed below for the electric properties that Cobalt

electrical Conductivity 1.7×107 S/m
Resistivity 6×10-8 m Ω
Superconducting allude N/A

Cobalt Heat and also Conduction Properties

heat Conductivity 100 W/(m K)
Thermal development 0.000013 K-1

Cobalt Magnetic Properties

Magnetic form Ferromagnetic
Curie allude 1394 K
massive Magnetic Susceptibility N/A
Molar Magnetic Susceptibility N/A
Volume Magnetic Susceptibility N/A

Optical nature of Cobalt

Refractive table of contents N/A

Acoustic nature of Cobalt

rate of Sound 4720 m/s

Cobalt thermal Properties - Enthalpies and also thermodynamics

Refer come table listed below for thermal properties the Cobalt

Melting point 1768 K (1495 °C)
Boiling point 3.2×103 K (2927 °C)
an important Temperature N/A
Superconducting point N/A

Enthalpies of Cobalt

heat of combination 16.2 kJ/mol
warm of Vaporization 375 kJ/mol
warmth of burning N/A

Cobalt isotope - nuclear Properties that Cobalt

Isotopes the rhodium. Naturally arising Cobalt has 1 steady isotope - 59Co.

Isotope Isotope mass % variety T half Decay setting
59Co 100% steady N/A

Regulatory and also Health - Health and Safety Parameters and Guidelines

CAS Number CAS7440-48-4
RTECS Number RTECSGF8750000
dot Hazard class 4.1
dot Numbers 3089
EU Number N/A
NFPA Fire Rating N/A
NFPA dangers N/A
NFPA wellness Rating N/A
NFPA Reactivity Rating N/A
Autoignition allude N/A
Flashpoint N/A

Database Search

list of distinct identifiers to search the element in miscellaneous chemical it is registered databases

Database i would number
CAS Number - chemical Abstracts organization (CAS) CAS7440-48-4
CID Number CID104730
Gmelin Number N/A
NSC Number N/A
RTECS Number RTECSGF8750000

Compare Cobalt through all Group 9 elements

Cobalt vs Rhodium Cobalt vs Iridium Cobalt vs Meitnerium

Compare Cobalt v all transition metal elements

Cobalt vs Scandium Cobalt vs Titanium Cobalt vs Vanadium Cobalt vs Chromium Cobalt vs Manganese Cobalt vs iron Cobalt vs Nickel Cobalt vs Copper Cobalt vs Zinc Cobalt vs Yttrium Cobalt vs Zirconium Cobalt vs Niobium Cobalt vs Molybdenum Cobalt vs Technetium Cobalt vs Ruthenium Cobalt vs Rhodium Cobalt vs Palladium Cobalt vs silver- Cobalt vs Cadmium Cobalt vs Hafnium Cobalt vs Tantalum Cobalt vs Tungsten Cobalt vs Rhenium Cobalt vs Osmium Cobalt vs Iridium Cobalt vs Platinum Cobalt vs gold Cobalt vs Mercury Cobalt vs Rutherfordium Cobalt vs Dubnium Cobalt vs Seaborgium Cobalt vs Bohrium Cobalt vs Hassium Cobalt vs Meitnerium Cobalt vs Darmstadtium Cobalt vs Roentgenium Cobalt vs Copernicium