Pseudohalide vs. Halide — What's the Difference?

(chemistry) A chemical compound that is not a halide, but which resembles a halide in its charge and reactivity.

A halide is a binary phase, of which one part is a halogen atom and the other part is an element or radical that is less electronegative (or more electropositive) than the halogen, to make a, e.g., fluoride, chloride, or theoretically tennesside compound. The alkali metals combine directly with halogens under appropriate conditions forming halides of the general formula, MX (X = F, Cl, Br or I).

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

(chemistry) A salt of any halogen acid.

A salt of any halogen acid