... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > hydroxides > oxoacid > boron oxoacid > boric acids > metaboric acid

... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > hydrogen molecular entity > hydroxides > oxoacid > boron oxoacid > boric acids > metaboric acid

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > oxygen molecular entity > hydroxides > oxoacid > boron oxoacid > boric acids > metaboric acid

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > boron group molecular entity > boron molecular entity > boron oxoacid > boric acids > metaboric acid