Iodine

Table columns:
General properties
Pronunciation
Appearance
Standard atomic weight (Ar, standard)
Iodine 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 Br ↑ I ↓ At tellurium ← iodine → xenon
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 Br ↑ I ↓ At tellurium ← iodine → xenon
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
tellurium ← iodine → xenon
Atomic number (Z)
Group
Period
Element category
Block
Electron configuration
Electrons per shell
Physical properties
Phase at STP
Melting point
Boiling point
Density (near r.t.)
Triple point
Critical point
Heat of fusion
Heat of vaporisation
Molar heat capacity
Vapour pressure (rhombic) P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 260 282 309 342 381 457
P (Pa)
at T (K)
Atomic properties
Oxidation states
Electronegativity
Ionisation energies
Atomic radius
Covalent radius
Van der Waals radius
Spectral lines
Spectral lines
Miscellanea
Crystal structure
Thermal conductivity
Electrical resistivity
Magnetic ordering
Magnetic susceptibility
Bulk modulus
CAS Number
History
Discovery and first isolation
Main isotopes of iodine
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 123I syn 13 h ε, γ 123Te 124I syn 4.176 d ε 124Te 125I syn 59.40 d ε 125Te 127I 100% stable 129I trace 1.57×107 y β− 129Xe 131I syn 8.02070 d β−, γ 131Xe 135I syn 6.57 h β− 135Xe
Iso­tope
123I
124I
125I
127I
129I
131I
135I
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Table rows:
cells: 0
                              
General properties                              
/ˈaɪ.ədaɪn, -dɪn, -diːn/ ​(EYE-ə-dyne, -din, -deen)                              
lustrous metallic gray, violet as a gas                              
126.90447(3)[1]                              
Iodine 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 Br ↑ I ↓ At tellurium ← iodine → xenon                              
                              
Br ↑ I ↓ At                              
                              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
tellurium ← iodine → xenon                              
53                              
group 17 (halogens)                              
period 5                              
reactive nonmetal                              
p-block                              
[Kr] 4d10 5s2 5p5                              
2, 8, 18, 18, 7                              
Physical properties                              
solid                              
386.85 K ​(113.7 °C, ​236.66 °F)                              
457.4 K ​(184.3 °C, ​363.7 °F)                              
4.933 g/cm3                              
386.65 K, ​12.1 kPa                              
819 K, 11.7 MPa                              
(I2) 15.52 kJ/mol                              
(I2) 41.57 kJ/mol                              
(I2) 54.44 J/(mol·K)                              
Vapour pressure (rhombic) P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 260 282 309 342 381 457                              
1 10 100 1 k 10 k 100 k                         
260 282 309 342 381 457                         
Atomic properties                              
7, 6, 5, 4, 3, 1, −1 ​(a strongly acidic oxide)                              
Pauling scale: 2.66                              
1st: 1008.4 kJ/mol 2nd: 1845.9 kJ/mol 3rd: 3180 kJ/mol                              
empirical: 140 pm                              
139±3 pm                              
198 pm                              
Spectral lines                              
Spectral lines                              
Miscellanea                              
​orthorhombic                              
0.449 W/(m·K)                              
1.3×107 Ω·m (at 0 °C)                              
diamagnetic[2]                              
−88.7·10−6 cm3/mol (298 K)[3]                              
7.7 GPa                              
7553-56-2                              
History                              
Bernard Courtois (1811)                              
Main isotopes of iodine                              
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 123I syn 13 h ε, γ 123Te 124I syn 4.176 d ε 124Te 125I syn 59.40 d ε 125Te 127I 100% stable 129I trace 1.57×107 y β− 129Xe 131I syn 8.02070 d β−, γ 131Xe 135I syn 6.57 h β− 135Xe                              
Abun­dance Half-life (t1/2) Decay mode Pro­duct                           
syn 13 h ε, γ 123Te                           
syn 4.176 d ε 124Te                           
syn 59.40 d ε 125Te                           
100% stable stable stable                           
trace 1.57×107 y β− 129Xe                           
syn 8.02070 d β−, γ 131Xe                           
syn 6.57 h β− 135Xe                           
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Questions about this table:
originalText: what family is iodine in on the periodic table
answer: answerTexts: group 17 (halogens)