{"thcode":2,"term":{"code":1384,"name":"actinide series elements","parent":1426,"scope":null},"uf":[],"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":1385,"name":"actinium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Ac and atomic number 89 <http:\/\/periodic.lanl.gov\/89.shtml>"},{"code":1392,"name":"americium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Am and atomic number 95 <http:\/\/periodic.lanl.gov\/95.shtml>"},{"code":1405,"name":"berkelium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Bk and atomic number 97 <http:\/\/periodic.lanl.gov\/97.shtml>"},{"code":1419,"name":"californium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Cf and atomic number 98 <http:\/\/periodic.lanl.gov\/98.shtml>"},{"code":1438,"name":"curium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Cm and atomic number 96 <http:\/\/periodic.lanl.gov\/96.shtml>"},{"code":1445,"name":"einsteinium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Es and atomic number 99 <http:\/\/periodic.lanl.gov\/99.shtml>"},{"code":1453,"name":"fermium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Fm and atomic number 100 <http:\/\/periodic.lanl.gov\/100.shtml>"},{"code":1491,"name":"lawrencium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Lr and atomic number 103 <http:\/\/periodic.lanl.gov\/103.shtml>"},{"code":1502,"name":"mendelevium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Md and atomic number 101 <http:\/\/periodic.lanl.gov\/101.shtml>"},{"code":1518,"name":"neptunium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Np and atomic number 93 <http:\/\/periodic.lanl.gov\/93.shtml>"},{"code":1524,"name":"nobelium","parent":1427,"scope":"Rare earth (actinide series) element with symbol No and atomic number 102 <http:\/\/periodic.lanl.gov\/102.shtml>"},{"code":1539,"name":"plutonium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Pu and atomic number 94 <http:\/\/periodic.lanl.gov\/94.shtml>"},{"code":1547,"name":"protactinium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Pa and atomic number 91 <http:\/\/periodic.lanl.gov\/91.shtml>"},{"code":1593,"name":"thorium","parent":1427,"scope":"Rare earth (actinide series) element with symbol Th and atomic number 90 <http:\/\/periodic.lanl.gov\/90.shtml>"},{"code":1605,"name":"uranium","parent":1427,"scope":"Rare earth (actinide series) element with symbol U and atomic number 92 <http:\/\/periodic.lanl.gov\/92.shtml>"}]}