Iodide

Iodide
Names
	Systematic IUPAC name Iodide
Identifiers
CAS Number	20461-54-5 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	3587184
ChEBI	CHEBI:16382;
ChEMBL	ChEMBL185537 ;
ChemSpider	28015 ;
Gmelin Reference	14912
KEGG	C00708 ;
PubChem CID	30165;
UNII	09G4I6V86Q ;
	InChI InChI=1S/HI/h1H/p-1 Key: XMBWDFGMSWQBCA-UHFFFAOYSA-M ;
	SMILES [I-];
Properties
Chemical formula	I−;
Molar mass	126.90447 g·mol−1
Conjugate acid	Hydrogen iodide
Thermochemistry
Std molar; entropy (S⦵298)	169.26 J K−1 mol−1
Related compounds
Other anions	Fluoride; Chloride; Bromide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

An iodide ion is I⁻. Compounds with iodine in formal oxidation state −1 are called iodides. In everyday life, iodide is most commonly encountered as a component of iodized salt, which many governments mandate. Worldwide, iodine deficiency affects two billion people and is the leading preventable cause of intellectual disability.