Bismuth
Chemical element with atomic number 83Àdàkọ:SHORTDESC:Chemical element with atomic number 83
Bismuth, 83 Bi Bismuth Pípè / ˈ b ɪ z m ə θ / (BIZ -məth ) Ìhànsójú lustrous silver Ìwúwo átọ̀mù A r, std (Bi) 208.9804 0(1) [1] Bismuth ní orí tábìlì àyè
Nọ́mbà átọ̀mù (Z ) 83 Ẹgbẹ́ group 15 (pnictogens) Àyè àyè 6 Àdìpọ̀ Àdìpọ̀-p Ẹ̀ka ẹ́límẹ́ntì Post-transition metalÌtò ẹ̀lẹ́ktrọ́nù [Xe ] 4f14 5d10 6s2 6p3 Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan 2, 8, 18, 32, 18, 5 Àwọn ohun ìní ara Ìfarahàn at STP solid Ìgbà ìyọ́ 544.7 K (271.5 °C, 520.7 °F) Ígbà ìhó 1837 K (1564 °C, 2847 °F) Kíki (near r.t. ) 9.78 g/cm3 when liquid (at m.p. ) 10.05 g/cm3 Heat of fusion 11.30 kJ/mol Heat of 151 kJ/mol Molar heat capacity 25.52 J/(mol·K) pressure
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
941
1041
1165
1325
1538
1835
Atomic properties Oxidation states −3, −2, −1, +1, +2, +3 , +4, +5 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment Electronegativity Pauling scale: 2.02 energies Atomic radius empirical: 156 pm Covalent radius 148±4 pm Van der Waals radius 207 pm Color lines in a spectral range Spectral lines of bismuth Other properties Natural occurrence primordial Crystal structure rhombohedral Speed of sound thin rod 1790 m/s (at 20 °C) Thermal expansion 13.4 µm/(m·K) (at 25 °C) Thermal conductivity 7.97 W/(m·K) Electrical resistivity 1.29 µ Ω·m (at 20 °C) Magnetic ordering diamagnetic Young's modulus 32 GPa Shear modulus 12 GPa Bulk modulus 31 GPa Poisson ratio 0.33 Mohs hardness 2.25 Brinell hardness 94.2 MPa CAS Number 7440-69-9 Main isotopes of bismuth
Isotope
Abundance
Half-life (t 1/2 )
Decay mode
Product
207 Bi
syn
31.55 y
ε, β+
2.399
207 Pb
208 Bi
syn
368,000 y
ε, β+
2.880
208 Pb
209 Bi
100%
(19 ± 2) ×1018 y
α
3.14
205 Tl
210m Bi
syn
3.04 ×106 y
IT
0.271
210 Bi
Àdàkọ:Category-inline | references
Bismuth (pípè /ˈbɪzməθ/ , BIZ -məth ) je ipilese elegbogi to ni ami-idamo Bi ati nomba atomu 83.
Itumosi
↑ Meija, Juris; Coplen, Tyler B.; Berglund, Michael; Brand, Willi A.; De Bièvre, Paul; Gröning, Manfred; Holden, Norman E.; Irrgeher, Johanna et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry 88 (3): 265–91. doi:10.1515/pac-2015-0305 .
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