 In 1908 , Japanese chemist Masataka Ogawa announced that he had discovered the 43rd element and named it nipponium ( Np ) after Japan ( Nippon in Japanese ) . However , later analysis indicated the presence of rhenium ( element 75 ) , not element 43 . The symbol Np was later used for the element neptunium , and the name " nihonium " , also named after Japan , has been proposed for element 113 . 
