{"thcode":2,"term":{"code":1525,"name":"noble gas elements","parent":1426,"scope":null},"uf":[{"name":"inert gases","usewith":false}],"bt":[{"code":1426,"name":"chemical element groups","parent":1382,"scope":"Groups shown at <http:\/\/periodic.lanl.gov\/>"},{"code":1382,"name":"elements","parent":1174,"scope":"Chemical elements and element groups"},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[],"rt":[{"code":1395,"name":"argon","parent":1427,"scope":"Noble gas element with symbol Ar and atomic number 18 <http:\/\/periodic.lanl.gov\/18.shtml>"},{"code":1470,"name":"helium","parent":1427,"scope":"Noble gas element with symbol He and atomic number 2 <http:\/\/periodic.lanl.gov\/2.shtml>"},{"code":1487,"name":"krypton","parent":1427,"scope":"Noble gas element with symbol Kr and atomic number 36 <http:\/\/periodic.lanl.gov\/36.shtml>"},{"code":1517,"name":"neon","parent":1427,"scope":"Noble gas element with symbol Ne and atomic number 10 <http:\/\/periodic.lanl.gov\/10.shtml>"},{"code":1552,"name":"radon","parent":1427,"scope":"Noble gas element with symbol Rn and atomic number 86 <http:\/\/periodic.lanl.gov\/86.shtml>"},{"code":1613,"name":"xenon","parent":1427,"scope":"Noble gas element with symbol Xe and atomic number 54 <http:\/\/periodic.lanl.gov\/54.shtml>"}]}