Phìn, 5 B 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
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 acid ic 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
10 B content may be as low as 19.1% and as high as 20.3% in natural samples. 11 B is the remainder in such cases.[11]
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.
↑ Van Setten et al. 2007, pp. 2460–1
↑ Conventional Atomic Weights 2013 . Commission on Isotopic Abundances and Atomic Weights
↑ Standard Atomic Weights 2013 . Commission on Isotopic Abundances and Atomic Weights
↑ 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 .
↑ 模板:Cite article
↑ 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.
↑ Lide, David R. (ed.) (2000). Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics (PDF) . CRC press. ISBN 0849304814 .
↑ 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.
↑ 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 .
↑ 10.0 10.1 "Atomic Weights and Isotopic Compositions for All Elements" . National Institute of Standards and Technology. 2008-09-21 chhà-khon .
↑ 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 .