What is the {diatomic nonmetal} with the {MAX(oxidation state)} ?
What diatomic nonmetal has the highest oxidation state?
select ?ent where { ?ent wdt:P31 wd:Q19753344 . ?ent wdt:P1121 ?obj } ORDER BY DESC(?obj)LIMIT 5 
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q19753344>.
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1121>.
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .}
ORDER BY DESC(?obj)
LIMIT 5
What's the highest oxidation state of a diatomic nonmetal?