Francium

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.

Francium,  ₈₇Fr

Ki-pún sèng-chit
Miâ, hû-hō	francium, Fr
Francium tī chiu-kî-piáu lāi ê ūi-tì
Cs ↑ Fr ↓ (Uue) radon ← francium → radium
Goân-chú-hoan	87
Goân-chú-liōng	(223)
Goân-sò͘ lūi-pia̍t	kiⁿ-kim-sio̍k
Cho̍k, hun-khu	1 cho̍k, s khu
Chiu-kî	tē 7 chiu-kî
Tiān-chú pâi-lia̍t	[Rn] 7s1
per shell	2, 8, 18, 32, 18, 8, 1
Bu̍t-lí sèng-chit
Siòng	kò͘-thé presumably
Iûⁿ-tiám	? 300 K ​(27 °C, ​80 °F)
Hut-tiám	? 950 K ​(677 °C, ​1250 °F)
Bi̍t-tō͘  (sek-un)	1.87 g·cm−3 (extrapolated)
Iûⁿ-hoà-jia̍t	ca. 2 kJ·mol−1
Cheng-hoat-jia̍t	ca. 65 kJ·mol−1
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)
Tiān-hū-tō͘	Pauling scale: 0.7
Tiān-lī-lêng	1st: 393 kJ·mol−1
Kiōng-kè pòaⁿ-kèng	260 pm (extrapolated)
Van der Waals pòaⁿ-kèng	348 pm (extrapolated)
Cha̍p-lio̍k
Chiⁿ-thé kò͘-chō	​body-centered cubic (bcc) (extrapolated)
Jia̍t-thoân-tō-lu̍t	15 W·m−1·K−1 (extrapolated)
Tiān-chó͘-lu̍t	3 µΩ·m (calculated)
Chû-sèng	Paramagnetic
CAS teng-kì pian-hō	7440-73-5
Le̍k-sú
Hō-miâ	after France, homeland of the discoverer
Hoat-hiān kap siōng chá ê tông-ūi-sò͘	Marguerite Perey (1939)
Chòe ún-tēng ê tông-ūi-sò͘
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