 |
Lead |
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Pípè | /ˈlɛd/ (LED) |
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Ìhànsójú | gray |
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Ìwúwo átọ̀mù Ar, std(Pb) | 207.2(1)[1] |
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Lead ní orí tábìlì àyè |
---|
|
Nọ́mbà átọ̀mù (Z) | 82 |
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Ẹgbẹ́ | group 14 (carbon group) |
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Àyè | àyè 6 |
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Àdìpọ̀ | Àdìpọ̀-p |
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Ẹ̀ka ẹ́límẹ́ntì | Post-transition metal |
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Ìtò ẹ̀lẹ́ktrọ́nù | [Xe] 4f14 5d10 6s2 6p2 |
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Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 32, 18, 4 |
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Àwọn ohun ìní ara |
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Ìfarahàn at STP | solid |
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Ìgbà ìyọ́ | 600.61 K (327.46 °C, 621.43 °F) |
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Ígbà ìhó | 2022 K (1749 °C, 3180 °F) |
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Kíki (near r.t.) | 11.34 g/cm3 |
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when liquid (at m.p.) | 10.66 g/cm3 |
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Heat of fusion | 4.77 kJ/mol |
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Heat of | 179.5 kJ/mol |
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Molar heat capacity | 26.650 J/(mol·K) |
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pressure
P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
---|
at T (K)
|
978
|
1088
|
1229
|
1412
|
1660
|
2027
|
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|
Atomic properties |
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Oxidation states | −4, −2, −1, +1, +2, +3, +4 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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Electronegativity | Pauling scale: 2.33 |
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Atomic radius | empirical: 175 pm |
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Covalent radius | 146±5 pm |
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Van der Waals radius | 202 pm |
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Spectral lines of lead |
Other properties |
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Natural occurrence | primordial |
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Crystal structure | (fcc) |
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Thermal expansion | 28.9 µm/(m·K) (at 25 °C) |
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Thermal conductivity | 35.3 W/(m·K) |
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Electrical resistivity | 208 n Ω·m (at 20 °C) |
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Magnetic ordering | diamagnetic |
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Young's modulus | 16 GPa |
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Shear modulus | 5.6 GPa |
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Bulk modulus | 46 GPa |
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Poisson ratio | 0.44 |
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Mohs hardness | 1.5 |
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Brinell hardness | 38.3 MPa |
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CAS Number | 7439-92-1 |
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Main isotopes of lead |
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Àdàkọ:Category-inline | references |