Francium

Francium,  ₈₇Fr

Kî-pún sin-sit
Miàng, fù-ho	francium, Fr
Francium chhai chû-khì-péu ke vi-chi
Cs ↑ Fr ↓ (Uue) radon ← francium → radium
ngièn-chṳ́ sì-sú	87
ngièn-chṳ́-liòng	(223)
ngièn-su lui-phe̍t	kán-kîm-su̍k
Chhu̍k, fûn-khî	1 chhu̍k, s-block
chû-khì	period 7
thien-chṳ́ phài-lie̍t	[Rn] 7s1
per shell	2, 8, 18, 32, 18, 8, 1
vu̍t-lî sin-chṳt
Siông	ku-thí presumably
yùng-tiám	? 300 K ​(27 °C, ​80 °F)
pui-tiám	? 950 K ​(677 °C, ​1250 °F)
Me̍t-thu near Sit-vûn	1.87 g·cm−3 (extrapolated)
Yùng-fa-ngie̍t	ca. 2 kJ·mol−1
Chîn-fat-ngie̍t	ca. 65 kJ·mol−1
chîn-hi-ap (extrapolated) P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 404 454 519 608 738 946
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	+1 ​(a strongly basic oxide)
Thien-fu-sin	Pauling scale: 0.7
Thien-lì-nèn	1st: 393 kJ·mol−1
Khiung-ka pan-kang	260 pm (extrapolated)
Van der Waals pan-kang	348 pm (extrapolated)
Miscellanea
Chîn-thí keu-chho	​body-centered cubic (bcc) (extrapolated)
Ngie̍t-chhòn-thô-li̍t	15 W·m−1·K−1 (extrapolated)
Thien-chú-li̍t	3 µΩ·m (calculated)
Chhṳ̀-sin	Paramagnetic
CAS Registry Number	7440-73-5
Le̍k-sú
Hí-miàng	after France, homeland of the discoverer
Hoat-kiàn kap siōng chá ê tông-ūi-sò͘	Marguerite Perey (1939)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: francium ke thùng-vi-su
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

Francium he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Fr, ngièn-chṳ́ su-muk he 87.