Solidelements,codedasG,JandQ,belongtothesameperiodoftheperiodictable,andformoxideswiththefollowingproperties:
GO3reactswithwatertoformastronglyacidicsolution,
J2O3reactswithstrongacidsandstrongalkalis,
Q2Oreactswithwatertoformastronglyalkalinesolution.