Phìn

Phìn (硼), fe̍t-chá ham-cho phìn-su (硼素), he yit-chúng Fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì B, ngièn-chṳ́ su-muk he 5, chhai Ngièn-su chû-khì-péu chûng thi-ńg vi.

Phìn,  ₅B

ngoi-kôn
black-brown boron (β-rhombohedral)[1]
Kî-pún sin-sit
Miàng, fù-ho	Phìn, B
Yîn-ngî	boron
thùng-su-thí	α-, β-rhombohedral, β-tetragonal (and more)
ngoi-hìn	black-brown
Phìn chhai chû-khì-péu ke vi-chi
– ↑ B ↓ Al beryllium ← Phìn → Than
ngièn-chṳ́ sì-sú	5
ngièn-chṳ́-liòng	10.81[2] (10.806–10.821)[3]
ngièn-su lui-phe̍t	lui-kîm-su̍k
Chhu̍k, fûn-khî	13 chhu̍k, p-block
chû-khì	period 2
thien-chṳ́ phài-lie̍t	[He] 2s2 2p1
per shell	2, 3
vu̍t-lî sin-chṳt
Siông	ku-thí
yùng-tiám	2349 K ​(2076 °C, ​3769 °F)
pui-tiám	4200 K ​(3927 °C, ​7101 °F)
yùng-tiám ke yi̍t-thí me̍t-thu	2.08 g·cm−3
Yùng-fa-ngie̍t	50.2 kJ·mol−1
Chîn-fat-ngie̍t	508 kJ·mol−1
Ngie̍t-yùng-liong	11.087 J·mol−1·K−1
chîn-hi-ap P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 2348 2562 2822 3141 3545 4072
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	3, 2, 1, −1, −5[4][5] ​(a mildly acidic oxide)
Thien-fu-sin	Pauling scale: 2.04
Thien-lì-nèn	1st: 800.6 kJ·mol−1 2nd: 2427.1 kJ·mol−1 3rd: 3659.7 kJ·mol−1 (more)
Ngièn-chṳ́ pan-kang	empirical: 90 pm
Khiung-ka pan-kang	84±3 pm
Van der Waals pan-kang	192 pm
Miscellanea
Chîn-thí keu-chho	​rhombohedral
Sâng-suk thin rod	16,200 m·s−1 (at 20 °C)
Ngie̍t-phàng-chong	β form: 5–7 µm·m−1·K−1 (at 25 °C)[6]
Ngie̍t-chhòn-thô-li̍t	27.4 W·m−1·K−1
Thien-chú-li̍t	~106 Ω·m (at 20 °C)
Chhṳ̀-sin	diamagnetic[7]
Mohs hardness	~9.5
CAS Registry Number	7440-42-8
Le̍k-sú
Fat-hien	Joseph Louis Gay-Lussac and Louis Jacques Thénard[8] (30 June 1808)
First isolation	Humphry Davy[9] (9 July 1808)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Phìn ke thùng-vi-su
iso NA half-life DM DE (MeV) DP 10B 19.9(7)% 10B is stable with 5 neutrons[10] 11B 80.1(7)% 11B is stable with 6 neutrons[10]
10B content may be as low as 19.1% and as high as 20.3% in natural samples. 11B is the remainder in such cases.[11]

Chhâm-kháu chṳ̂-liau

1. Van Setten et al. 2007, pp. 2460–1
2. Conventional Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
3. Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
4. Zhang, K.Q.; Guo, B.; Braun, V.; Dulick, M.; Bernath, P.F. (1995). "Infrared Emission Spectroscopy of BF and AIF" (PDF). J. Molecular Spectroscopy 170: 82. Bibcode:1995JMoSp.170...82Z. doi:10.1006/jmsp.1995.1058. Archived from the original (PDF) on 2012-01-11. 2018-06-07 chhà-khon.
5. 模板:Cite article
6. Holcombe Jr., C. E.; Smith, D. D.; Lorc, J. D.; Duerlesen, W. K.; Carpenter; D. A. (October 1973). "Physical-Chemical Properties of beta-Rhombohedral Boron". High Temp. Sci. 5 (5): 349–57.
7. Lide, David R. (ed.) (2000). Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics (PDF). CRC press. ISBN 0849304814. Archived from the original on 2012-01-12. 2018-06-07 chhà-khon.
8. Gay Lussac, J.L. and Thenard, L.J. (1808). "Sur la décomposition et la recomposition de l'acide boracique". Annales de chimie 68: 169–174.
9. Davy H (1809). "An account of some new analytical researches on the nature of certain bodies, particularly the alkalies, phosphorus, sulphur, carbonaceous matter, and the acids hitherto undecomposed: with some general observations on chemical theory". Philosophical Transactions of the Royal Society of London 99: 39–104. doi:10.1098/rstl.1809.0005.
10. "Atomic Weights and Isotopic Compositions for All Elements". National Institute of Standards and Technology. 2008-09-21 chhà-khon.
11. Szegedi, S.; Váradi, M.; Buczkó, Cs. M.; Várnagy, M.; Sztaricskai, T. (1990). "Determination of boron in glass by neutron transmission method". Journal of Radioanalytical and Nuclear Chemistry Letters 146 (3): 177. doi:10.1007/BF02165219.