Iodine Element Symbol I

I is the chemical element symbol for iodine, atomic number 53. I₂ denotes molecular iodine, while I⁻ denotes iodide. I identifies the element iodine in periodic tables and chemical formulas. Its atomic number is 53. For Iodine Element Symbol, I is encoded as U+0049, and its Unicode name is LATIN CAPITAL LETTER I. I is the element symbol for iodine, atomic number 53. The character is a capital Latin I, U+0049. Because a single vertical letter can be visually ambiguous in some fonts, chemistry context and a readable label are especially useful. Different iodine expressions carry different information. I₂ represents molecular iodine, I⁻ is the iodide ion, and a compound such as KI contains potassium and iodide. The bare element symbol I should not replace those complete formulas when molecule count or charge matters. The same glyph I is widely used for electric current. A circuit equation, unit expression, or physics table may therefore use I with a non-chemical meaning. This page covers iodine only; the Electric Current Symbol page covers the variable. The Iodide Symbol page covers I⁻ and its negative charge. For copying, preserve the capital letter and any attached subscript or superscript from the full formula. HTML can display I as literal UTF-8, I, or I. The code point alone cannot state “iodine,” so the surrounding formula or text must establish the chemical role. In educational or public-facing material, introduce the notation as “iodine (I).” Avoid presenting I, I₂, and I⁻ as interchangeable variants, because each describes a different chemical level. I is the IUPAC chemical symbol for iodine. It is an ordinary capital Latin letter used as a case-sensitive chemical symbol and should be distinguished from lowercase l, the numeral 1, and current notation.