Iodine
53I
Br ↑ I ↓ At Periodic table tellurium ← iodine → xenon
Panagway
lustrous metallic gray, violet as a gas
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	iodine, I, 53
Paglitok	/ˈaɪ.ədaɪn/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ə-dyn]], /ˈaɪ.ədᵻn/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ə-dən]], or /ˈaɪ.ədiːn/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ə-deen]]
Kategoriyang elemento	halogen
Group, period, block	17, 5, p
Gibug-aton sa atomo	126.90447
Kontorno sa elektron	[Kr] 4d10 5s2 5p5 2, 8, 18, 18, 7
History
Pagkadiskobre	Bernard Courtois (1811)
First isolation	Bernard Courtois (1811)
Physical properties
Phase	magahi
Density (near r.t.)	4.933 g·cm−3
Melting point	386.85 K, 113.7 °C, 236.66 °F
Boiling point	457.4 K, 184.3 °C, 363.7 °F
Triple point	386.65 K (113°C), 12.1 kPa
Critical point	819 K, 11.7 MPa
Heat of fusion	(I2) 15.52 kJ·mol−1
Heat of vaporization	(I2) 41.57 kJ·mol−1
Molar heat capacity	(I2) 54.44 J·mol−1·K−1
Vapor pressure (rhombic)
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 260 282 309 342 381 457
Atomic properties
Oxidation states	7, 5, 3, 1, -1 (strongly acidic oxide)
Electronegativity	2.66 (Pauling scale)
Ionization energies	1st: 1008.4 kJ·mol−1
	2nd: 1845.9 kJ·mol−1
	3rd: 3180 kJ·mol−1
Atomic radius	140 pm
Covalent radius	139±3 pm
Van der Waals radius	198 pm
Miscellanea
Crystal structure	orthorhombic
Magnetic ordering	diamagnetic[1]
Electrical resistivity	(0 °C) 1.3×107Ω·m
Thermal conductivity	0.449 W·m−1·K−1
Bulk modulus	7.7 GPa
CAS registry number	7553-56-2
Most stable isotopes
Main article: Isotopes of iodine
iso NA half-life DM DE (MeV) DP 123I syn 13 h ε, γ 0.16 123Te 124I syn 4.176 d ε - 124Te 125I syn 59.40 d ε - 125Te 127I 100% 127I is stable with 74 neutrons 129I trace 1.57×107 y β− 0.194 129Xe 131I syn 8.02070 d β−, γ 0.971 131Xe 135I syn 6.57 h β− - 135Xe
v t e · r

Ang yodo (Iningles iodine) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga I ug kaiphan nga atomik 53. Ang yodo mao ang halogen.

1. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.