Protactinium

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Protactini   91Pa
Kĭng(gì-tă hĭ-gĭng-sṳ̆k)
Hâi(hĭ-iū ké-tā̤)
Lī (gĭng-sṳ̆k)(giĕng-gĭng-sṳ̆k)
Pì (gĭng-sṳ̆k)(giĕng-tū gĭng-sṳ̆k)
Bèng(lôi-gĭng-sṳ̆k)
Táng(gì-tă hĭ-gĭng-sṳ̆k)
Dâng(gì-tă hĭ-gĭng-sṳ̆k)
Iōng(gì-tă hĭ-gĭng-sṳ̆k)
Hók (nguòng-só)(lū-só)
Neon(hĭ-iū ké-tā̤)
Năk(giĕng-gĭng-sṳ̆k)
Mī (gĭng-sṳ̆k)(giĕng-tū gĭng-sṳ̆k)
Lé̤ṳ(bìng-gĭng-sṳ̆k)
Sĭk (nguòng-só)(lôi-gĭng-sṳ̆k)
Lìng (nguòng-só)(gì-tă hĭ-gĭng-sṳ̆k)
Liù-uòng(gì-tă hĭ-gĭng-sṳ̆k)
Lṳ̆k (nguòng-só)(lū-só)
Ā (nguòng-só)(hĭ-iū ké-tā̤)
Gák (gĭng-sṳ̆k)(giĕng-gĭng-sṳ̆k)
Gái (gĭng-sṳ̆k)(giĕng-tū gĭng-sṳ̆k)
Scandium(guó-dô gĭng-sṳ̆k)
Titanium(guó-dô gĭng-sṳ̆k)
Vanadium(guó-dô gĭng-sṳ̆k)
Gáuk (gĭng-sṳ̆k)(guó-dô gĭng-sṳ̆k)
Mâing (gĭng-sṳ̆k)(guó-dô gĭng-sṳ̆k)
Tiék(guó-dô gĭng-sṳ̆k)
Gū (gĭng-sṳ̆k)(guó-dô gĭng-sṳ̆k)
Ngiĕk(guó-dô gĭng-sṳ̆k)
Dè̤ng(guó-dô gĭng-sṳ̆k)
Ā-iòng(guó-dô gĭng-sṳ̆k)
Gallium(bìng-gĭng-sṳ̆k)
Germanium(lôi-gĭng-sṳ̆k)
Piĕ (nguòng-só)(lôi-gĭng-sṳ̆k)
Să̤ (gó-tā̤)(gì-tă hĭ-gĭng-sṳ̆k)
Chéu (nguòng-só)(lū-só)
Káik (nguòng-só)(hĭ-iū ké-tā̤)
Rubidium(giĕng-gĭng-sṳ̆k)
Strontium(giĕng-tū gĭng-sṳ̆k)
Yttrium(guó-dô gĭng-sṳ̆k)
Zirconium(guó-dô gĭng-sṳ̆k)
Niobium(guó-dô gĭng-sṳ̆k)
Mŭk (gĭng-sṳ̆k)(guó-dô gĭng-sṳ̆k)
Technetium(guó-dô gĭng-sṳ̆k)
Ruthenium(guó-dô gĭng-sṳ̆k)
Rhodium(guó-dô gĭng-sṳ̆k)
Bă (gĭng-sṳ̆k)(guó-dô gĭng-sṳ̆k)
Ngṳ̀ng(guó-dô gĭng-sṳ̆k)
Gáik (gĭng-sṳ̆k)(guó-dô gĭng-sṳ̆k)
Indium(bìng-gĭng-sṳ̆k)
Sék(bìng-gĭng-sṳ̆k)
Dà̤ (gĭng-sṳ̆k)(lôi-gĭng-sṳ̆k)
Dá̤ (nguòng-só)(lôi-gĭng-sṳ̆k)
Diēng(lū-só)
Să̤ (ké-tā̤)(hĭ-iū ké-tā̤)
Caesium(giĕng-gĭng-sṳ̆k)
Barium(giĕng-tū gĭng-sṳ̆k)
Lanthanum(lanthanum-hiê)
Cerium(lanthanum-hiê)
Praseodymium(lanthanum-hiê)
Neodymium(lanthanum-hiê)
Promethium(lanthanum-hiê)
Samarium(lanthanum-hiê)
Europium(lanthanum-hiê)
Gadolinium(lanthanum-hiê)
Terbium(lanthanum-hiê)
Dysprosium(lanthanum-hiê)
Holmium(lanthanum-hiê)
Erbium(lanthanum-hiê)
Thulium(lanthanum-hiê)
Ytterbium(lanthanum-hiê)
Lutetium(lanthanum-hiê)
Hafnium(guó-dô gĭng-sṳ̆k)
Tantalum(guó-dô gĭng-sṳ̆k)
Ŭ (gĭng-sṳ̆k)(guó-dô gĭng-sṳ̆k)
Rhenium(guó-dô gĭng-sṳ̆k)
Osmium(guó-dô gĭng-sṳ̆k)
Iridium(guó-dô gĭng-sṳ̆k)
Băh-gĭng(guó-dô gĭng-sṳ̆k)
Gĭng(guó-dô gĭng-sṳ̆k)
Cūi-ngṳ̀ng(guó-dô gĭng-sṳ̆k)
Thallium(bìng-gĭng-sṳ̆k)
Iòng (gĭng-sṳ̆k)(bìng-gĭng-sṳ̆k)
Bék (gĭng-sṳ̆k)(bìng-gĭng-sṳ̆k)
Polonium(bìng-gĭng-sṳ̆k)
Astatine(lū-só)
Radon(hĭ-iū ké-tā̤)
Francium(giĕng-gĭng-sṳ̆k)
Lòi (gĭng-sṳ̆k)(giĕng-tū gĭng-sṳ̆k)
Actinium(actinium-hiê)
Thorium(actinium-hiê)
Protactinium(actinium-hiê)
Iù (gĭng-sṳ̆k)(actinium-hiê)
Neptunium(actinium-hiê)
Plutonium(actinium-hiê)
Americium(actinium-hiê)
Curium(actinium-hiê)
Berkelium(actinium-hiê)
Californium(actinium-hiê)
Einsteinium(actinium-hiê)
Fermium(actinium-hiê)
Mendelevium(actinium-hiê)
Nobelium(actinium-hiê)
Lawrencium(actinium-hiê)
Rutherfordium(guó-dô gĭng-sṳ̆k)
Dubnium(guó-dô gĭng-sṳ̆k)
Seaborgium(guó-dô gĭng-sṳ̆k)
Bohrium(guó-dô gĭng-sṳ̆k)
Hassium(guó-dô gĭng-sṳ̆k)
Meitnerium(mâ̤ hiēu dĕk-séng)
Darmstadtium(mâ̤ hiēu dĕk-séng)
Roentgenium(mâ̤ hiēu dĕk-séng)
Copernicium(guó-dô gĭng-sṳ̆k)
Nihonium(mâ̤ hiēu dĕk-séng)
Flerovium(bìng-gĭng-sṳ̆k)
Moscovium(mâ̤ hiēu dĕk-séng)
Livermorium(mâ̤ hiēu dĕk-séng)
Tennessine(mâ̤ hiēu dĕk-séng)
Oganesson(mâ̤ hiēu dĕk-séng)
Praseodymi

Protactini

(Uqt)
ThoriProtactiniUrani
ngôi-guăng
bright, silvery metallic luster
gái-huóng
miàng-cê·hù-hô̤·sê̤ṳ-só Protactini (protactinium)·Pa·91
nguòng-só lôi-biék actinium-hiê
cŭk·ciŭ-gĭ·kṳ̆ n/a·7·f
nguòng-cṳ̄-liông 231.03588(2)
diêng-cṳ̄ bà̤-buó

[Rn] 5f2 6d1 7s2
2, 8, 18, 32, 20, 9, 2

Protactini gì diêng cṳ̄ cèng (2, 8, 18, 32, 20, 9, 2)
Lĭk-sṳ̄
ê̤ṳ-cháik Dmitri Mendeleev(1869 nièng)
kī-miàng Otto Hahn and Lise Meitner(1917–8 nièng)
ŭk-lī séng-cék
ŭk-tái gó-tā̤
mĭk-dô̤ (ciék-gê̤ṳng sék-ŭng)
15.37 g·cm−3
iòng-diēng 1841 K,1568 °C,2854 °F
bé-diēng 4300 K,4027 °C,7280 °F
iòng iĕk 12.34 kJ·mol−1
ké-huá iĕk 481 kJ·mol−1
cĭng-ké-ák
nguòng-cṳ̄ séng-cék
iōng-huá-tái 2, 3, 4, 5
((a weakly basic oxide))
diêng-hô-séng 1.5 (Pauling biĕu-dô)
diêng-liê-nèng dâ̤ 1: {{{1st ionization energy}}} kJ·mol−1
nguòng-cṳ̄ buáng-géng 163 pm
gê̤ṳng-gá buáng-géng 200 pm
gì-tă
cĭng-tā̤ giék-gáiu

tetragonal[1]

Protactini ô tetragonal cĭng-tā̤ giék-gáiu
Cṳ̀-sê̤ṳ paramagnetic
diêng-cū-lŭk (0 °C)177 nΩ·m
iĕk-dô̤-lŭk 47 W·m−1·K−1
pàng-dióng hiê-só ~9.9 µm/(m·K)
CAS hô̤ 7440-13-3
có̤i ūng-diâng gì dùng-ôi-só


dùng-ôi-só hŭng-dô buáng-sŏi-gĭ huŏng-sék nèng-liôngMeV sāng-ŭk
229Pa syn 1.5 d ε 0.311 229Th
230Pa syn 17.4 d ε 1.310 230Th
231Pa 100% 3.276×104 y α 5.150 227Ac
232Pa syn 1.31 d β 1.337 232U
233Pa trace 26.967 d β 0.5701 233U
234Pa trace 6.75 h β 2.195 234U
234mPa trace 1.17 min β 2.29 234U

Protactinium sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só. Nguòng-cṳ̄ sê̤ṳ-só sê 91, huá-hŏk hù-hô̤ sê Pa.

Huá-hŏk séng-cék[Siŭ-gāi | Gāi nguòng-mā]

Éng-ê̤ṳng[Siŭ-gāi | Gāi nguòng-mā]

Cié-chṳ̄[Siŭ-gāi | Gāi nguòng-mā]

Chăng-kō̤ cṳ̆-lâiu[Siŭ-gāi | Gāi nguòng-mā]

  1. Donohue, J. On the crystal structure of protactinium metal. Acta Crystallographica. 1959, 12 (9): 697. doi:10.1107/S0365110X59002031.