Fluorine vs. Fluoride — What's the Difference?

A chemical element with the symbol F and atomic number 9.

The negative ion of fluorine.

A pale yellow, highly reactive gas.

Found in various minerals like fluorite.

The lightest of the halogen group.

An agent beneficial in reducing tooth decay.

An element that forms compounds with most other elements.

A component in dental products.

A substance used in various industrial applications.

A compound or ion derived from fluorine.

Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas.

Fluoride () is an inorganic, monatomic anion of fluorine, with the chemical formula F− (also written [F]−), whose salts are typically white or colorless. Fluoride salts typically have distinctive bitter tastes, and are odorless.

A pale-yellow, highly corrosive, poisonous, gaseous halogen element, the most electronegative and most reactive of all the elements, existing as a diatomic gas (F2) and used in a wide variety of industrially important compounds. Atomic number 9; atomic weight 18.9984; melting point -219.67°C; boiling point -188.12°C; specific gravity of liquid 1.50 (at boiling point); valence 1. See Periodic Table.

A compound of fluorine with another element or group, especially salt of the anion F⁻ or an organic compound with fluorine bonded to an alkyl group.

(uncountable) The chemical element (symbol F) with an atomic number of 9. It is the lightest of the halogens, a pale yellow-green, highly reactive gas that attacks all metals.

Sodium fluoride or another fluorine-containing salt added to water supplies or toothpaste in order to reduce tooth decay.

A single atom of this element.

Univalent fluorine, or a compound of fluorine, especially a binary compound of fluorine with a more electropositive element.

A non-metallic, gaseous element of atomic number 9, strongly acid or negative, and associated with chlorine, bromine, and iodine, in the halogen group of which it is the first member. It always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepared nor kept in glass vessels, but may be contained in lead vessels. If set free it immediately attacks a containing glass vessel, so that it was not isolated until 1886. It is a pungent, corrosive, colorless gas. Symbol F. Atomic weight 19.00.

(chemistry) Any salt of hydrofluoric acid; for example, potassium fluoride.

A nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite

(chemistry) A binary compound of fluorine and another element or radical.

A binary compound of fluorine with another element or radical.

A salt of hydrofluoric acid