Òjé
Chemical element with atomic number 82Àdàkọ:SHORTDESC:Chemical element with atomic number 82
Lead, 82 Pb Lead Pípè / ˈ l ɛ d / (LED ) Ìhànsójú gray Ìwúwo átọ̀mù A r, std (Pb) 207.2(1) [1] Lead ní orí tábìlì àyè
Nọ́mbà átọ̀mù (Z ) 82 Ẹgbẹ́ group 14 (carbon group) Àyè àyè 6 Àdìpọ̀ Àdìpọ̀-p Ẹ̀ka ẹ́límẹ́ntì Post-transition metalÌtò ẹ̀lẹ́ktrọ́nù [Xe ] 4f14 5d10 6s2 6p2 Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan 2, 8, 18, 32, 18, 4 Àwọn ohun ìní ara Ìfarahàn at STP solid Ìgbà ìyọ́ 600.61 K (327.46 °C, 621.43 °F) Ígbà ìhó 2022 K (1749 °C, 3180 °F) Kíki (near r.t. ) 11.34 g/cm3 when liquid (at m.p. ) 10.66 g/cm3 Heat of fusion 4.77 kJ/mol Heat of 179.5 kJ/mol Molar heat capacity 26.650 J/(mol·K) pressure
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
978
1088
1229
1412
1660
2027
Atomic properties Oxidation states −4, −2, −1, +1, +2 , +3, +4 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment Electronegativity Pauling scale: 2.33 Atomic radius empirical: 175 pm Covalent radius 146±5 pm Van der Waals radius 202 pm Color lines in a spectral range Spectral lines of lead Other properties Natural occurrence primordial Crystal structure (fcc) Thermal expansion 28.9 µm/(m·K) (at 25 °C) Thermal conductivity 35.3 W/(m·K) Electrical resistivity 208 n Ω·m (at 20 °C) Magnetic ordering diamagnetic Young's modulus 16 GPa Shear modulus 5.6 GPa Bulk modulus 46 GPa Poisson ratio 0.44 Mohs hardness 1.5 Brinell hardness 38.3 MPa CAS Number 7439-92-1 Main isotopes of lead
Isotope
Abundance
Half-life (t 1/2 )
Decay mode
Product
204 Pb
1.4%
>1.4×1017 y
Alpha
2.186
200 Hg
205 Pb
syn
1.53×107 y
Epsilon
0.051
205 Tl
206 Pb
24.1%
206 Pb is stable with 124 neutrons
207 Pb
22.1%
207 Pb is stable with 125 neutrons
208 Pb
52.4%
208 Pb is stable with 126 neutrons
210 Pb
trace
22.3 y
Alpha
3.792
206 Hg
Beta
0.064
210 Bi
Àdàkọ:Category-inline | references
Òjé ( / ˈ l ɛ d / ) je idipo ninla apilese pelu ami-idamo Pb (Látìnì : plumbum ) ati nomba atomu 82.
Itokasi
↑ 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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