facet 8 of periodic table is Oxygen with atomic number 8, atomic load 15.9994. Oxygen, symbol O, has a Base focused Monoclinic structure and also Colorless color. Oxygen is a other nonmetal element. Trivial surname of Oxygen is chalcogens*. Know everything about Oxygen Facts, physics Properties, chemical Properties, electronic configuration, Atomic and also Crystal Structure.


Oxygen is a chemical element with symbol O and atomic number 8. The is a member that the chalcogen group on the regular table and also is a extremely reactive nonmetal and oxidizing agent that readily forms compounds (notably oxides) with many elements. By mass, oxygen is the third-most abundant facet in the universe, ~ hydrogen and helium.

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Oxygen Facts

Read vital information and facts around element Oxygen

surname Oxygen
atomic Number 8
atom Symbol O
Atomic weight 15.9994
step Gas
shade Colorless
Classification other nonmetal
group in periodic Table 16
Group Name oxygen household
period in periodic Table 2
Block in periodic Table p-block
Electronic Configuration 2s2 2p4
Melting suggest -218.3 °C
Boiling allude -182.9 °C
Electronic covering Structure <2, 6>
CAS Number CAS7782-44-7

How to find Oxygen on routine Table

Periodic table is i ordered it by atomic number, number of protons in the nucleus i beg your pardon is same as number of electrons. The atomic number rises from left to right. Periodic table beginning at peak left ( atomic number 1) and ends at bottom appropriate (atomic number 118). As such you can straight look because that atomic number 8 to find Oxygen on regular table.

Another means to read routine table and locate an element is by using group number (column) and duration number (row). To find Oxygen on periodic table look because that cross ar of group 16 and period 2 in the modern periodic table.

discover Interactive periodic Table to Understand and Learn Cool fads

Table of Contents

Physical Properties
Thermal Properties
Crystal Structure
Atomic & orbital Properties
Chemical Properties
Health and Safety Parameters and also Guidelines
Compare Oxygen with various other elements

Oxygen History

The element Oxygen was uncovered by Carl Wilhelm Scheele in year 1774 in Sweden and United Kingdom . Oxygen derived its name from the Greek native oxy-, both "sharp" and also "acid", and -gen, definition "acid-forming"

Oxygen Presence: variety in Nature and Around Us

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

Ppb by load (1ppb =10^-7 %)
variety in universe 0.01
abundance in sun 0.009
variety in Meteorites 0.4
Abundance in Earth"s late 0.46
variety in oceans 0.86
diversity in human beings 0.61

Crystal structure of Oxygen

The hard state framework of Oxygen is Base focused Monoclinic.

The decision structure can be explained in regards to its unit Cell. The unit cells repeats itself in 3 dimensional an are to type the structure.

Unit cabinet Parameters

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

a b c
540.3 342.9 508.6 pm

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

alpha beta gamma
π/2 2.313085 π/2

The location of the atoms within the unit cell are defined by the collection of atomic positions ( xi, yi, zi) measured from a recommendation lattice point.

The symmetry nature of the decision are described by the ide of an are groups. All feasible symmetric arrangements of particles in three-dimensional room are explained by the 230 room groups (219 distinctive types, or 230 if chiral duplicates are thought about distinct.

space Group name C12/m1
an are Group Number 12
Crystal structure Base focused Monoclinic

Oxygen Atomic and also Orbital Properties

Oxygen atoms have 8 electrons and also the digital shell structure is <2, 6> with Atomic ax Symbol (Quantum Numbers) 3P2.

atomic Number 8
Number of electrons (with no charge) 8
Number that Protons 8
Mass Number 16
Number the Neutrons 8
Shell structure (Electrons per energy level) <2, 6>
Electron configuration 2s2 2p4
Valence Electrons 2s2 2p4
Oxidation State -2;-1 1;2
Atomic hatchet Symbol (Quantum Numbers) 3P2

Shell framework of Oxygen - electron per energy level


Ground State digital Configuration the Oxygen - neutral Oxygen atom

The soil state electronic configuration that Neutral Oxygen atom is 2s2 2p4. The section of Oxygen configuration that is identical to the noble gas that the coming before period, is abbreviated as . Because that atoms with plenty of electrons, this notation can become prolonged and for this reason an abbreviated notation is used.This is vital as it is the Valence electrons 2s2 2p4, electron in the outermost shell that recognize the chemical properties that the element.

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Unabbreviated electronic configuration the neutral Oxygen

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

1s2 2s2 2p4

Atomic structure of Oxygen

Oxygen atomic radius is 48 pm, if it"s covalent radius is 73 pm.

atomic Radius

48 afternoon (0.48 Å)

Atomic Volume 11.1962211337 cm3
Covalent Radius 73 afternoon (0.73 Å)
valve der Waals Radius 152 pm
neutron Cross section 0.00028 σa/barns

Atomic Spectrum that Oxygen


Oxygen chemistry Properties: Oxygen Ionization Energies and electron affinity

The electron affinity of Oxygen is 141 kJ/mol

Valence 2
Electronegativity 3.44
ElectronAffinity 141 kJ/mol

Ionization power of Oxygen

Refer to table below for Ionization energies of Oxygen

Ionization power number Enthalpy - kJ/mol
1 1313.9
2 3388.3
3 5300.5
4 7469.2
5 10989.5
6 13326.5
7 71330
8 84078

Oxygen physics Properties

Refer to listed below table because that Oxygen physics Properties

thickness 1.429 g/l
Molar Volume 11.1962211337 cm3

Elastic Properties

Young Modulus N/A
Shear Modulus N/A
bulk Modulus N/A
Poisson ratio N/A

Hardness the Oxygen - test to measure of Hardness the Element

Mohs Hardness N/A
Vickers Hardness N/A
Brinell Hardness N/A

Oxygen electric Properties

Oxygen is N/A of electricity. Describe table below for the electric properties of Oxygen

electric Conductivity N/A
Resistivity N/A
Superconducting point N/A

Oxygen Heat and also Conduction Properties

thermal Conductivity 0.02658 W/(m K)
Thermal growth N/A

Oxygen Magnetic Properties

Magnetic kind Paramagnetic
Curie allude N/A
mass Magnetic Susceptibility 1.335×10-6
Molar Magnetic Susceptibility 4.27184×10-8
Volume Magnetic Susceptibility 1.90772×10-6

Optical properties of Oxygen

Refractive table of contents 1.000271

Acoustic nature of Oxygen

speed of Sound 317.5 m/s

Oxygen heat Properties - Enthalpies and also thermodynamics

Refer come table below for thermal properties the Oxygen

Melting allude 54.8 K (-218.3 °C)
Boiling point 90.2 K (-182.9 °C)
an essential Temperature 154.59 K
Superconducting allude N/A

Enthalpies that Oxygen

warm of fusion 0.222 kJ/mol
heat of Vaporization 3.41 kJ/mol
heat of burning N/A

Oxygen isotopes - nuclear Properties the Oxygen

Isotopes the rhodium. Naturally occurring Oxygen has actually 3 secure isotope - 16O, 17O, 18O.

Isotope Isotope massive % diversity T half Decay mode
16O 99.757% stable N/A
17O 0.038% secure N/A
18O 0.205% secure N/A

Regulatory and also Health - Health and Safety Parameters and also Guidelines

CAS Number CAS7782-44-7
RTECS Number RTECSRS2060000
dot Hazard course 2.2
dot Numbers 1073
EU Number N/A
NFPA Fire Rating 0
NFPA dangers Oxidizing Agent
NFPA wellness Rating 3
NFPA Reactivity Rating 2
Autoignition point N/A
Flashpoint N/A

Database Search

perform of distinctive identifiers to find the facet in various chemical registry databases

Database i would number
CAS Number - chemistry Abstracts service (CAS) CAS7782-44-7
CID Number CID977
Gmelin Number N/A
NSC Number N/A
RTECS Number RTECSRS2060000

Compare Oxygen with all Group 16 elements

Oxygen vs Sulfur Oxygen vs Selenium Oxygen vs Tellurium Oxygen vs Polonium Oxygen vs Livermorium

Compare Oxygen with all other nonmetal elements

Oxygen vs Hydrogen Oxygen vs Carbon Oxygen vs Nitrogen Oxygen vs Phosphorus Oxygen vs Sulfur Oxygen vs Selenium