Chlorine

Table columns:
General properties
Pronunciation
Appearance
Standard atomic weight (Ar, standard)
Chlorine in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson F ↑ Cl ↓ Br sulfur ← chlorine → argon
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson F ↑ Cl ↓ Br sulfur ← chlorine → argon
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Hydrogen
Lithium
Sodium
Potassium
Rubidium
Caesium
Francium
sulfur ← chlorine → argon
Atomic number (Z)
Group, period
Block
Element category
Electron configuration
Electrons per shell
Physical properties
Phase (at STP)
Melting point
Boiling point
Density (at STP)
when liquid (at b.p.)
Critical point
Heat of fusion
Heat of vaporisation
Molar heat capacity
Vapour pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 128 139 153 170 197 239
P (Pa)
at T (K)
Atomic properties
Oxidation states
Electronegativity
Ionisation energies
Covalent radius
Van der Waals radius
Spectral lines
Spectral lines
Miscellanea
Crystal structure
Speed of sound
Thermal conductivity
Electrical resistivity
Magnetic ordering
Magnetic susceptibility
CAS Number
History
Discovery and first isolation
Recognized as an element by
Main isotopes of chlorine
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 35Cl 76% stable 36Cl trace 3.01×105 y β− 36Ar ε 36S 37Cl 24% stable
Iso­tope
35Cl
36Cl
36Cl
37Cl
view talk edit | references | in Wikidata

Table rows:
cells: 0
                              
General properties                              
/ˈklɔəriːn/ or /ˈklɔərɪn/ KLOHR-een or KLOHR-in                              
pale yellow-green gas                              
[35.446, 35.457] conventional: 35.45[1]                              
Chlorine in the periodic table                              
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson F ↑ Cl ↓ Br sulfur ← chlorine → argon                              
                              
F ↑ Cl ↓ Br                              
                              Helium
Beryllium                         Boron Carbon Nitrogen Oxygen Fluorine Neon
Magnesium                         Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Calcium Scandium               Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Strontium Yttrium               Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
sulfur ← chlorine → argon                              
17                              
group 17 (halogens), period 3                              
p-block                              
diatomic nonmetal                              
[Ne] 3s2 3p5                              
2, 8, 7                              
Physical properties                              
gas                              
171.6 K ​(−101.5 °C, ​−150.7 °F)                              
239.11 K ​(−34.04 °C, ​−29.27 °F)                              
3.2 g/L                              
1.5625 g/cm3[2]                              
416.9 K, 7.991 MPa                              
(Cl2) 6.406 kJ/mol                              
(Cl2) 20.41 kJ/mol                              
(Cl2) 33.949 J/(mol·K)                              
Vapour pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 128 139 153 170 197 239                              
1 10 100 1 k 10 k 100 k                         
128 139 153 170 197 239                         
Atomic properties                              
7, 6, 5, 4, 3, 2, 1, −1 ​(a strongly acidic oxide)                              
Pauling scale: 3.16                              
1st: 1251.2 kJ/mol 2nd: 2298 kJ/mol 3rd: 3822 kJ/mol (more)                              
102±4 pm                              
175 pm                              
Spectral lines                              
Spectral lines                              
Miscellanea                              
​orthorhombic                              
206 m/s (gas, at 0 °C)                              
8.9×10−3 W/(m·K)                              
>10 Ω·m (at 20 °C)                              
diamagnetic[3]                              
−40.5·10−6 cm3/mol[4]                              
7782-50-5                              
History                              
Carl Wilhelm Scheele (1774)                              
Humphry Davy (1808)                              
Main isotopes of chlorine                              
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 35Cl 76% stable 36Cl trace 3.01×105 y β− 36Ar ε 36S 37Cl 24% stable                              
Abun­dance Half-life (t1/2) Decay mode Pro­duct                           
76% stable stable stable                           
trace 3.01×105 y β− 36Ar                           
ε 36S                             
24% stable stable stable                           
view talk edit | references | in Wikidata                              

Questions about this table:
originalText: 17 cl 35.453 what is the atomic number of this element
answer: answerTexts: 17