Tantalum rhymes with:
absalom, absolom, curriculum, diverticulum, frenulum, jerusalem, pendulum, venalum, absalom, absolom, allum, alum, anklam, antebellum, arunachalam, asylum, bedlam, bellum, bensalem, bolam, callum, collom, collum, colomb, column, cullom, cullum, curriculum, diverticulum, elam, emblem, exemplum, felim, flagellum, frenulum, fullam, gastilum, gillam, gillum, goldblum, golem, gollum, golomb, hallam, hallum, harlem, haslam, hollom, holum, hoodlum, hullum, jaglom, jerusalem, kallam, kellam, kellum, killam, kornblum, lindblom, ludlam, ludlum, maccallum, macklem, mahlum, mccallum, mccollam, mccollom, mccollum, mccullum, melhem, milam, milem, milum, moslem, muslim, pablum, pelham, pellum, pendulum, phylum, problem, pullam, pullum, salem, sholem, slalom, solemn, solum, ullom, venalum, willam, willem, wollam, woolum, zelem