Rubidium

Rubidium,  ₃₇Rb

ngoi-kôn
grey white
Kî-pún sin-sit
Miàng, fù-ho	Rubidium, Rb
ngoi-hìn	grey white
Rubidium chhai chû-khì-péu ke vi-chi
K ↑ Rb ↓ Cs krypton ← Rubidium → strontium
ngièn-chṳ́ sì-sú	37
ngièn-chṳ́-liòng (±)	85.4678(3)[1]
ngièn-su lui-phe̍t	kán-kîm-su̍k
Chhu̍k, fûn-khî	1 chhu̍k, s-block
chû-khì	period 5
thien-chṳ́ phài-lie̍t	[Kr] 5s^1
per shell	2, 8, 18, 8, 1
vu̍t-lî sin-chṳt
Siông	ku-thí
yùng-tiám	312.45 K ​(39.30 °C, ​102.74 °F)
pui-tiám	961 K ​(688 °C, ​1270 °F)
Me̍t-thu near Sit-vûn	1.532 g·cm^−3
1.46 g·cm^−3
Sâm-siong-tiám	312.41 K, ​? kPa[2]
lìm-kie-tiám	2093 K, 16 MPa (extrapolated)[2]
Yùng-fa-ngie̍t	2.19 kJ·mol^−1
Chîn-fat-ngie̍t	69 kJ·mol^−1
Ngie̍t-yùng-liong	31.060 J·mol^−1·K^−1
chîn-hi-ap P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 434 486 552 641 769 958
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	+1, −1 ​(a strongly basic oxide)
Thien-fu-sin	Pauling scale: 0.82
Thien-lì-nèn	1st: 403 kJ·mol^−1 2nd: 2632.1 kJ·mol^−1 3rd: 3859.4 kJ·mol^−1
Ngièn-chṳ́ pan-kang	empirical: 248 pm
Khiung-ka pan-kang	220±9 pm
Van der Waals pan-kang	303 pm
Miscellanea
Chîn-thí keu-chho	​body-centered cubic (bcc)
Sâng-suk thin rod	1300 m·s^−1 (at 20 °C)
Ngie̍t-phàng-chong	90 µm·m^−1·K^−1[3] (at r.t.)
Ngie̍t-chhòn-thô-li̍t	58.2 W·m^−1·K^−1
Thien-chú-li̍t	128 nΩ·m (at 20 °C)
Chhṳ̀-sin	paramagnetic[4]
Young's modulus	2.4 GPa
Bulk modulus	2.5 GPa
Mohs hardness	0.3
Brinell hardness	0.216 MPa
CAS Registry Number	7440-17-7
Le̍k-sú
Fat-hien	Robert Bunsen and Gustav Kirchhoff (1861)
First isolation	George de Hevesy
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Rubidium ke thùng-vi-su
iso NA half-life DM DE (MeV) DP ^83Rb syn 86.2 d ε – ^83Kr γ 0.52, 0.53, 0.55 – ^84Rb syn 32.9 d ε ^84Kr β^+ ^84Kr γ – β^− ^84Sr ^85Rb 72.17% ^85Rb is stable with 48 neutrons ^86Rb syn 18.65 d β^− 1.775 ^86Sr γ 1.0767 – ^87Rb 27.83% 4.9×10^10 y β^− 0.283 ^87Sr

Rubidium (Hon-ngî: 銣 lú) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Rb, ngièn-chṳ́ su-muk he 37.

Chhâm-kháu chṳ̂-liau

1. Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
2. 模板:RubberBible92nd
3. http://www.owlnet.rice.edu/~msci301/ThermalExpansion.pdf
4. Magnetic susceptibility of the elements and inorganic compounds, in 模板:RubberBible86th