carbonium ion

(redirected from Methonium)
Also found in: Encyclopedia.

car·bo·ni·um ion

 (kär-bō′nē-əm)
n.
An organic cation, such as H5C+, having a hypervalent carbon atom and a positive charge localized on the carbon atom.

carbonium ion

(kɑːˈbəʊnɪəm)
n
(Chemistry) a positively charged organic ion in which most of the positive charge is localized on a carbon atom. Compare carbanion
Mentioned in ?