Nā huahana
| Thorium, 90th | |
| CAS No. | 7440-29-1 |
| Helehelena | ʻO ka mākala, pinepine me ke kāʻeiʻeleʻele |
| Nā helu atomic (z) | 90 |
| Phase ma st st | luhi |
| Malting Point | 2023 K (1750 ° C, 3182 ° F) |
| Makaʻikua | 5061 k (4788 ° C, 8650 ° F) |
| Density (kokoke i RT) | 11.7 G / cm3 |
| Wela o ka fusion | 13.81 kj / mol |
| Wela o ka vaporisation | 54 kj / mol |
| Molar wela | 26.230 j / (mol · k) |
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Thorium (IV) Oxide (IV) (Thorium Dioxide)
Thorium dioxide (tho2), kapa mai hoʻiThorium (IV) Oxide, he kumu kūpono maikaʻi loa i ka thorium stable. He crystalline solid a me ke keʻokeʻo aʻulaʻula paha i ke kala. Kaulana a kapaʻiaʻo Thoria, ua hanaʻiaʻo ia e like me ka mea e like me ka huahana o Lanthannide a me Uranium. ʻO Thorlionite ka inoa o keʻano mineralogical o ka tooxium dioxide. Ua waiwai nuiʻo Thorium ma ke aniani a me ka hana cerramic ma keʻano he nani o ke aniani ma muli o kona mau kilokilo maikaʻi loa (99.999% pau) ʻAʻole hanaʻo Oxide Coopunds i ka uila.