Tantalum waa curiye kiimiko ah oo leh calaamad Ta iyo lambarka atomiga 73. Markii hore loo yiqiin tantalum, magaceedu wuxuu ka yimid Tantalus, oo ah sharfeed ka yimid khuraafaadka Giriigga. Tantalum waa bir dhif ah, adag, buluug-cawlan, bir kala guur ah oo dhalaalaya oo aad u adkaysa daxalka. Waa qayb ka mid ah kooxda biraha refractory, kuwaas oo si weyn loogu isticmaalo sida qaybo yaryar oo alloys ah. Jiritaanka kiimikaad ee tantalum waxay ka dhigtaa walax qiimo leh oo loogu talagalay qalabka shaybaadhka iyo beddelka platinum. Isticmaalkeeda ugu weyn maanta waa tantalum capacitors ee qalabka elektarooniga ah sida telefoonada gacanta, ciyaaryahan DVD, hababka ciyaaraha video iyo kombiyuutarada. Tantalum, oo had iyo jeer la mid ah niobium kiimikaad la mid ah, waxay ku dhacdaa kooxaha macdanta tantalite, columbite iyo coltan (isku dhafka columbite iyo tantalite, inkastoo aan loo aqoonsanayn noocyada macdanta gaarka ah). Tantalum waxa loo tixgaliyaa in ay tahay shay muhiim u ah tignoolajiyada.

Tilmaamaha jirka
Tantalum waa madow (buluug-cawlan), cufan, ductile, aad u adag, si sahlan loo farsameeyey, iyo kuleyl iyo koronto aad u sarreeya. Birtu waxay caan ku tahay iska caabbinta daxalka aashitada; Dhab ahaantii, heerkulka ka hooseeya 150 °C tantalum waxay si buuxda uga hortagtaa inay weerarto aqua regia sida caadiga ah gardarrada. Waxaa lagu milmi karaa acid hydrofluoric ama xal acidic ka kooban fluoride ion iyo sulfur trioxide, iyo sidoo kale xal of potassium hydroxide. Barta dhalaalka sare ee Tantalum ee 3017 °C (barta karkarinta 5458 °C) ayaa ka gudubtay curiyayaasha kaliya tungsten, rhenium iyo osmium biraha, iyo kaarboonka.

Tantalum waxay u jirtaa laba weji oo crystalline ah, alfa iyo beta. Marxaladda alfa waa mid jilicsan oo jilicsan; waxa ay leedahay qaab dhismeed cubic ah oo jidhka udub dhexaad u ah (koox banaan Im3m, lattice joogto ah a = 0.33058 nm), Knoop adkaanta 200-400 HN iyo iska caabin korantada 15-60 µΩ⋅cm. Marxaladda beta waa mid adag oo jaban; Summanadiisa crystal-ka waa tetragonal (koox banaan P42/mnm, a = 1.0194 nm, c = 0.5313 nm), adkaanta Knoop waa 1000-1300 HN iyo iska caabbinta korantadu waa mid aad u sareysa 170-210 µΩ⋅cm. Marxaladda beta waa metastable oo waxay u beddeshaa wejiga alfa marka la kululeeyo ilaa 750-775 °C. Tantalum bukku waa gebi ahaanba wejiga alfa, iyo heerka beta sida caadiga ah wuxuu u jiraa sida filimo khafiif ah oo laga helay xajinta magnetron, kaydinta uumiga kiimikaad ama kaydinta korantada ee dareeraha milixda dhalaalay.