The Kawai model describing the glueball-quarkonia mixing is modified. The
mixing of η, η′ and η(1410) is re-investigated based on
the modified Kawai model. The glueball-quarkonia content of the three states is
determined from a fit to the data of the electromagnetic decays involving
η, η′. Some predictions about the electromagnetic decays
involving η(1410) are presented.Comment: revtex 8 page