Francium (Óa-im: "hu-lán-si-ùm") sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 87, hoà-ha̍k hû-hō sī Fr.
Quick Facts Ki-pún sèng-chit, Miâ, hû-hō ...
Francium, 87Fr| Ki-pún sèng-chit |
|---|
| Miâ, hû-hō |
francium, Fr |
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| Francium tī chiu-kî-piáu lāi ê ūi-tì |
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|
|
| Goân-chú-hoan |
87 |
|---|
| Goân-chú-liōng |
(223) |
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| Goân-sò͘ lūi-pia̍t |
kiⁿ-kim-sio̍k |
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| Cho̍k, hun-khu |
1 cho̍k, s khu |
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| Chiu-kî |
tē 7 chiu-kî |
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| Tiān-chú pâi-lia̍t |
[Rn] 7s1 |
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| per shell |
2, 8, 18, 32, 18, 8, 1 |
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| Bu̍t-lí sèng-chit |
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| Siòng |
kò͘-thé presumably |
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| Iûⁿ-tiám |
? 300 K (27 °C, 80 °F) |
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| Hut-tiám |
? 950 K (677 °C, 1250 °F) |
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| Bi̍t-tō͘ (sek-un) |
1.87 g·cm−3 (extrapolated) |
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| Iûⁿ-hoà-jia̍t |
ca. 2 kJ·mol−1 |
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| Cheng-hoat-jia̍t |
ca. 65 kJ·mol−1 |
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cheng-khì-ap (extrapolated)
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| tī T (K) |
404 |
454 |
519 |
608 |
738 |
946 |
|
| Goân-chú sèng-chit |
|---|
| Sng-hòa-sò͘ |
+1 (a strongly basic oxide) |
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| Tiān-hū-tō͘ |
Pauling scale: 0.7 |
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| Tiān-lī-lêng |
1st: 393[1] kJ·mol−1 |
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| Kiōng-kè pòaⁿ-kèng |
260 pm (extrapolated) |
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| Van der Waals pòaⁿ-kèng |
348 pm (extrapolated) |
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| Cha̍p-lio̍k |
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| Chiⁿ-thé kò͘-chō |
body-centered cubic (bcc)
(extrapolated) |
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| Jia̍t-thoân-tō-lu̍t |
15 W·m−1·K−1 (extrapolated) |
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| Tiān-chó͘-lu̍t |
3 µΩ·m (calculated) |
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| Chû-sèng |
Paramagnetic |
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| CAS teng-kì pian-hō |
7440-73-5 |
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| Le̍k-sú |
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| Hō-miâ |
after France, homeland of the discoverer |
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| Hoat-hiān kap siōng chá ê tông-ūi-sò͘ |
Marguerite Perey (1939) |
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| Chòe ún-tēng ê tông-ūi-sò͘ |
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|
Chú bûn-chiong: francium ê tông-ūi-sò͘ |
| iso |
NA |
half-life |
DM |
DE (MeV) |
DP |
| 221Fr |
trace |
4.8 min |
α |
6.457 |
217At |
| 222Fr |
syn |
14.2 min |
β− |
2.033 |
222Ra |
| 223Fr |
trace |
22.00 min |
β− |
1.149 |
223Ra |
| α |
5.430 |
219At |
|
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