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Does it have to use nitrogen
editIt says "a quaternary compound is a cation consisting of a central positively charged nitrogen atom with four substituents" but then lists some without nitrogen. - Should we replace 'nitrogen' by say 'trivalent' ? - Rod57 (talk) 13:23, 14 September 2015 (UTC)
The article has been edited for consistency with binary compound and ternary compound.Rgdboer (talk) 03:22, 8 November 2016 (UTC)
Hatnote
editA hatnote with redlink has been removed per Wikipedia:Hatnote#Non-existent_articles.
Furthermore, two See also links have been restored.
No reason has been given for why Quaternary must refer to ammonia ! — Rgdboer (talk) 20:39, 29 October 2017 (UTC)