Iodine Element Properties

Iodine

p52
Te
Tellurium
p53
I
Iodine
p54
Xe
Xenon
General
Name(Iodine)
Symbol(I)
Number(53)
Group Number(17)
Group(Halogen)
Block(p)
Density(4.93 g/cm3)
Atomic Weight(126.9045 g/mol)
Atomic Volume(25.74 cm3/mol)
Discover(1811)


States
State(Solid)
Melting Point(386.85 K)
Boiling Point(457.4 K)
Triple Point(Nil)
Critical Point(819 K)
Heat of Fusion(15.52 kJ/mol)
Heat of Vaporization(41.57 kJ/mol)


Energies
First Ionization Energy(1008.4 kJ/mole)
Second Ionization Energy(1845.8 kJ/mole)
Third Ionization Energy(3184)
Electronegativity(2.66)
Electron Affinity(295.16 kJ/mole)
Specific Heat(0.214 J/gK)
Heat Atomization(107 kJ/mole atoms)


Oxidation and Electrons
Shells(2,8,18,18,7)
Electron Configuration([Kr] 4d10 5s2 5p5)
Minimum Oxidation Number(-1)
Maximum Oxidation Number(7)
Minimum Common Oxidation Number(0)
Maximum Common Oxidation Number(7)


Appearance and Characteristics
Crystal Structure(orthorhombic)
Characteristics(diatomic)
Color(bluish-black)
Uses(nutrient, antiseptic)
Hardness(Nil)
Toxicity(Yes)


Reactions
Reaction with Air(None)
Reaction with 6M HCl(None)
Reaction with 15M HNO3(mild, =>HIO3)
Reaction with 6M NaOH(mild, =>OI-, I-)


Other Forms
Number of Isotopes(1)
Hydride(HI)
Oxide(I2O5 I4O9 I2O4)
Chloride(ICl ICl3)


Radius
Atomic Radius(133 pm)
Ionic Radius (1+ ion)(Nil)
Ionic Radius (1- ion)(206 pm)
Ionic Radius (2+ ion)(Nil)
Ionic Radius (2- ion)(Nil)
Ionic Radius (3+ ion)(Nil)


Conductivity
Thermal Conductivity(0.45 J/m-sec-deg)
Electrical Conductivity(0 1/mohm-cm)
Polarizability(5 A3)


Abundance
Source(Brines, Chilean nitrate (misc))
Relation Abundance Solar System(-0.046 log)
Abundance Earths Crust(-0.3 log)


p52
Te
Tellurium
p53
I
Iodine
p54
Xe
Xenon

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