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Protactinium, 91Pa
| Ki-pún sèng-chit |
| Miâ, hû-hō |
protactinium, Pa |
| Gōa-hêng |
bright, silvery metallic luster |
| Protactinium tī chiu-kî-piáu lāi ê ūi-tì |
|
|
| Goân-chú-hoan |
91 |
| Goân-chú-liōng (±) |
231.03588(2)[1] |
| Goân-sò͘ lūi-pia̍t |
actinium-hē |
| Cho̍k, hun-khu |
n/a, f khu |
| Chiu-kî |
tē 7 chiu-kî |
| Tiān-chú pâi-lia̍t |
[Rn] 5f2 6d1 7s2 |
| per shell |
2, 8, 18, 32, 20, 9, 2 |
| Bu̍t-lí sèng-chit |
| Siòng |
solid |
| Iûⁿ-tiám |
1841 K (1568 °C, 2854 °F) |
| Hut-tiám |
4300 K (4027 °C, 7280 °F) (?) |
| Bi̍t-tō͘ (sek-un) |
15.37 g·cm−3 |
| Iûⁿ-hoà-jia̍t |
12.34 kJ·mol−1 |
| Cheng-hoat-jia̍t |
481 kJ·mol−1 |
| Goân-chú sèng-chit |
| Sng-hòa-sò͘ |
2, 3, 4, 5 (a weakly basic oxide) |
| Tiān-hū-tō͘ |
Pauling scale: 1.5 |
| Tiān-lī-lêng |
1st: 568 kJ·mol−1 |
| Goân-chú pòaⁿ-kèng |
empirical: 163 pm |
| Kiōng-kè pòaⁿ-kèng |
200 pm |
| Cha̍p-lio̍k |
| Chiⁿ-thé kò͘-chō |
tetragonal[2]
|
| Jia̍t-phòng-tiòng |
~9.9 µm·m−1·K−1[3] (at r.t.) |
| Jia̍t-thoân-tō-lu̍t |
47 W·m−1·K−1 |
| Tiān-chó͘-lu̍t |
177 nΩ·m (at 0 °C) |
| Chû-sèng |
paramagnetic[4] |
| CAS teng-kì pian-hō |
7440-13-3 |
| Le̍k-sú |
| Chhui-chhek |
Dmitri Mendeleev (1869) |
| Hoat-hiān kap siōng chá ê tông-ūi-sò͘ |
William Crookes (1900) |
| hō-miâ |
Otto Hahn and Lise Meitner (1917–8) |
| Chòe ún-tēng ê tông-ūi-sò͘ |
| Chú bûn-chiong: protactinium ê tông-ūi-sò͘ |
| iso |
NA |
half-life |
DM |
DE (MeV) |
DP |
| 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 sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 91, hoà-ha̍k hû-hō sī Pa.
- ↑ Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
- ↑ Donohue, J. (1959). "On the crystal structure of protactinium metal". Acta Crystallographica. 12 (9): 697. doi:10.1107/S0365110X59002031.
- ↑ Cverna, Fran, pian. (2002). "Chapter 2. Thermal Expansion". ASM Ready Reference: Thermal Properties of Metals (PDF). ASM International. p. 11. ISBN 0871707683.
- ↑ Lide, D. R., pian. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th pán.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
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