మూస:Infobox iodine

అయొడిన్, ₀₀I
అయొడిన్
Pronunciation	/ˈaɪədaɪn, -dɪn, -diːn/ (EYE-ə-dyne-,_--din)
Appearance	lustrous metallic gray, violet as a gas
Standard atomic weight Ar°(I)
	126.90447±0.00003; 126.90±0.01 (abridged);
అయొడిన్ in the periodic table
	టెలూరియం ← అయొడిన్ → జెనాన్
Group	మూస:Infobox element/symbol-to-group/format
Period	period 5
Block	p-block
Electron configuration	[Kr] 4d10 5s2 5p5
Electrons per shell	2, 8, 18, 18, 7
Physical properties
Phase at STP	solid
Melting point	386.85 K (113.7 °C, 236.66 °F)
Boiling point	457.4 K (184.3 °C, 363.7 °F)
Density (near r.t.)	4.933 g/cm3
Triple point	386.65 K, 12.1 kPa
Critical point	819 K, 11.7 MPa
Heat of fusion	(I2) 15.52 kJ/mol
Heat of vaporization	(I2) 41.57 kJ/mol
Molar heat capacity	(I2) 54.44 J/(mol·K)
Atomic properties
Oxidation states	−1, 0, +1, +2, +3, +4, +5, +6, +7 (a strongly acidic oxide)
Electronegativity	Pauling scale: 2.66
Atomic radius	empirical: 140 pm
Covalent radius	139±3 pm
Van der Waals radius	198 pm
	Spectral lines of అయొడిన్
Other properties
Natural occurrence	primordial
Crystal structure	orthorhombic
Thermal conductivity	0.449 W/(m⋅K)
Electrical resistivity	1.3×107 Ω⋅m (at 0 °C)
Magnetic ordering	diamagnetic
Bulk modulus	7.7 GPa
CAS Number	7553-56-2
History
Discovery	Bernard Courtois (1811)
First isolation	Bernard Courtois (1811)
Isotopes of అయొడిన్ v; e;
	Template:infobox అయొడిన్ isotopes does not exist
	Category: అయొడిన్; view; talk; edit; \| references

References

↑ "Standard Atomic Weights: Iodine". CIAAW. 1985.
↑ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.
↑ I(II) is known to exist in monoxide (IO); see Nikitin, I V (31 August 2008). "Halogen monoxides". Russian Chemical Reviews. 77 (8): 739–749. Bibcode:2008RuCRv..77..739N. doi:10.1070/RC2008v077n08ABEH003788. S2CID 250898175.
↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.

[1] "Standard Atomic Weights: Iodine". CIAAW. 1985.

[CIAAW2021-2] Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.

[3] I(II) is known to exist in monoxide (IO); see Nikitin, I V (31 August 2008). "Halogen monoxides". Russian Chemical Reviews. 77 (8): 739–749. Bibcode:2008RuCRv..77..739N. doi:10.1070/RC2008v077n08ABEH003788. S2CID 250898175.

[4] Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.

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