element 17 of regular table is Chlorine v atomic number 17, atomic load 35.453. Chlorine, prize Cl, has a Base focused Orthorhombic structure and Yellow color. Chlorine is a halogens element. Trivial name of Chlorine is halogens*. Know everything around Chlorine Facts, physical Properties, chemical Properties, digital configuration, Atomic and also Crystal Structure.


Chlorine is a chemical facet with symbol Cl and also atomic number 17. It likewise has a relative atomic massive of 35.5. Chlorine is in the halogen team (17) and is the 2nd lightest halogen adhering to fluorine.

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Chlorine Facts

Read key information and also facts around element Chlorine

surname Chlorine
atom Number 17
atomic Symbol Cl
Atomic load 35.453
step Gas
color Yellow
Classification halogens
group in regular Table 17
Group Name fluorine household
period in periodic Table 3
Block in regular Table p-block
Electronic Configuration 3s2 3p5
Melting point -101.5 °C
Boiling point -34.04 °C
Electronic shell Structure <2, 8, 7>
CAS Number CAS7782-50-5

How to locate Chlorine on routine Table

Periodic table is arranged by atom number, variety of protons in the nucleus i m sorry is exact same as number of electrons. The atomic number boosts from left to right. Periodic table start at top left ( atom number 1) and ends at bottom right (atomic number 118). Thus you can directly look because that atomic number 17 to discover Chlorine on routine table.

Another method to read periodic table and locate an element is by using team number (column) and period number (row). To find Chlorine on routine table look because that cross section of group 17 and period 3 in the modern periodic table.

discover Interactive periodic Table to Understand and Learn Cool patterns

Table the Contents

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

Chlorine History

The aspect Chlorine was discovered by Carl Wilhelm Scheele in year 1774 in Sweden . Chlorine derived its name from the Greek word chloros, an interpretation "greenish yellow"

Chlorine Presence: diversity in Nature and also Around Us

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

Ppb by load (1ppb =10^-7 %)
variety in universe 1e-06
variety in sunlight 8e-06
variety in Meteorites 0.00037
Abundance in Earth"s tardy 0.00017
variety in seas 0.02
variety in people 0.0012

Crystal structure of Chlorine

The solid state framework of Chlorine is Base focused Orthorhombic.

The decision structure have the right to be described in regards to its unit Cell. The unit cell repeats itself in 3 dimensional room to type the structure.

Unit cell Parameters

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

a b c
622.35 445.61 817.85 pm

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

alpha beta gamma
π/2 π/2 π/2

The positions of the atoms inside the unit cell are described by the collection of atomic positions ( xi, yi, zi) measured indigenous a reference lattice point.

The symmetry properties of the crystal are described by the concept of space groups. All feasible symmetric arrangements of corpuscle in three-dimensional room are described by the 230 an are groups (219 distinct types, or 230 if chiral duplicates are considered distinct.

space Group surname Cmca
an are Group Number 64
Crystal structure Base focused Orthorhombic

Chlorine Atomic and also Orbital Properties

Chlorine atoms have actually 17 electrons and also the digital shell framework is <2, 8, 7> through Atomic hatchet Symbol (Quantum Numbers) 2P3/2.

atomic Number 17
Number of electrons (with no charge) 17
Number of Protons 17
Mass Number 35
Number that Neutrons 18
Shell framework (Electrons per power level) <2, 8, 7>
Electron construction 3s2 3p5
Valence Electrons 3s2 3p5
Oxidation State -1 1;2;3;4;5;6;7
Atomic hatchet Symbol (Quantum Numbers) 2P3/2

Shell framework of Chlorine - electron per energy level


Ground State electronic Configuration the Chlorine - neutral Chlorine atom

The floor state electronic configuration that Neutral Chlorine atom is 3s2 3p5. The part of Chlorine configuration that is tantamount to the noble gas that the coming before period, is abbreviated as . For atoms with plenty of electrons, this notation deserve to become an extensive and for this reason an abbreviated notation is used.This is vital as that is the Valence electrons 3s2 3p5, electrons in the outermost covering that determine the chemistry properties the the element.

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Unabbreviated digital configuration the neutral Chlorine

Complete soil state electronic configuration because that the Chlorine atom, Unabbreviated electronic configuration

1s2 2s2 2p6 3s2 3p5

Atomic framework of Chlorine

Chlorine atomic radius is 79 pm, while it"s covalent radius is 99 pm.

atomic Radius

79 pm (0.79 Å)

Atomic Volume 11.030802738 cm3
Covalent Radius 99 pm (0.99 Å)
van der Waals Radius 175 pm
spirit Cross ar 35.3 σa/barns

Atomic Spectrum of Chlorine


Chlorine chemistry Properties: Chlorine Ionization Energies and also electron affinity

The electron affinity of Chlorine is 349 kJ/mol

Valence 5
Electronegativity 3.16
ElectronAffinity 349 kJ/mol

Ionization power of Chlorine

Refer come table listed below for Ionization energies that Chlorine

Ionization power number Enthalpy - kJ/mol
1 1251.2
2 2298
3 3822
4 5158.6
5 6542
6 9362
7 11018
8 33604
9 3.86×104
10 43961

Chlorine physics Properties

Refer to listed below table for Chlorine physical Properties

density 3.214 g/l
Molar Volume 11.030802738 cm3

Elastic Properties

Young Modulus N/A
Shear Modulus N/A
bulk Modulus 1.1 GPa
Poisson proportion N/A

Hardness the Chlorine - test to measure up of Hardness the Element

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

Chlorine electrical Properties

Chlorine is Insulator that electricity. Refer to table listed below for the electrical properties of Chlorine

electric Conductivity 0.01 S/m
Resistivity 100 m Ω
Superconducting allude N/A

Chlorine Heat and Conduction Properties

thermal Conductivity 0.0089 W/(m K)
Thermal growth N/A

Chlorine Magnetic Properties

Magnetic type Diamagnetic
Curie allude N/A
mass Magnetic Susceptibility -7.2×10-9
Molar Magnetic Susceptibility -5.11×10-10
Volume Magnetic Susceptibility -2.31×10-8

Optical properties of Chlorine

Refractive index 1.000773

Acoustic nature of Chlorine

rate of Sound 206 m/s

Chlorine heat Properties - Enthalpies and thermodynamics

Refer come table below for heat properties that Chlorine

Melting point 171.6 K (-101.5 °C)
Boiling suggest 239.11 K (-34.04 °C)
an important Temperature 416.9 K
Superconducting suggest N/A

Enthalpies the Chlorine

warmth of combination 3.2 kJ/mol
warmth of Vaporization 10.2 kJ/mol
heat of combustion N/A

Chlorine isotopes - nuclear Properties that Chlorine

Isotopes that rhodium. Naturally occurring Chlorine has actually 2 stable isotope - 35Cl, 37Cl.

Isotope Isotope massive % diversity T half Decay mode
35Cl 75.78% secure N/A
37Cl 24.22% steady N/A

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

CAS Number CAS7782-50-5
RTECS Number RTECSFO2100000
dot Hazard class N/A
dot Numbers N/A
EU Number N/A
NFPA Fire Rating N/A
NFPA dangers N/A
NFPA wellness Rating N/A
NFPA Reactivity Rating N/A
Autoignition suggest N/A
Flashpoint N/A

Database Search

perform of unique identifiers to search the aspect in various chemical registry databases

Database id number
CAS Number - chemistry Abstracts organization (CAS) CAS7782-50-5
CID Number CID24526
Gmelin Number N/A
NSC Number N/A
RTECS Number RTECSFO2100000

Compare Chlorine v all Group 17 elements

Chlorine vs Fluorine Chlorine vs Bromine Chlorine vs Iodine Chlorine vs Astatine Chlorine vs Tennessine

Compare Chlorine through all halogens elements

Chlorine vs Fluorine Chlorine vs Bromine Chlorine vs Iodine Chlorine vs Astatine Chlorine vs Tennessine