Phìn, 5 black-brown[ 1] Miàng, fù-ho Phìn, B Yîn-ngî boron thùng-su-thí α-, β-rhombohedral, β-tetragonal (and more ) ngoi-hìn black-brown 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 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-thu2.08 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 −1 chîn-hi-ap
P (Pa)
1
10
100
1 k
10 k
100 k
chhai T (K)
2348
2562
2822
3141
3545
4072
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 2427.1 kJ·mol−1 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 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 −1 (at 25 °C)[ 6] Ngie̍t-chhòn-thô-li̍t 27.4 W·m−1 −1 Thien-chú-li̍t ~106 Ω·m (at 20 °C) Chhṳ̀-sin diamagnetic [ 7] Mohs hardness ~9.5 CAS Registry Number 7440-42-8 Fat-hien Joseph Louis Gay-Lussac and Louis Jacques Thénard [ 8] (30 June 1808)First isolation Humphry Davy [ 9] (9 July 1808)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 . Archived from the original (PDF) on 2012-01-11. 2018-06-07 chhà-khon . ↑ 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 . Archived from the original on 2012-01-12. 2018-06-07 chhà-khon . ↑ 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 . 1 2 "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 .
