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Risasi (metali)
From Wikipedia, the free encyclopedia
kwa risasi kama ramia ya bunduki au bastola tazama risasi (silaha)
Ukweli wa haraka Risasi au Plumbi (plumbum; kiing. lead) ...
Risasi au Plumbi (plumbum; kiing. lead) | |
---|---|
Vipande vinene vya risasi huleta kinga dhidi ya Caesi nururifu chini yake. | |
Jina la Elementi | Risasi au Plumbi (plumbum; kiing. lead) |
Alama | Pb |
Namba atomia | 82 |
Mfululizo safu | Metali |
Uzani atomia | 207.2 |
Valensi | 2, 8, 18, 32, 18, 4 |
Densiti | 11.34 g/cm³ |
Ugumu (Mohs) | 1.5 |
Kiwango cha kuyeyuka | 600.61 K (327.46 °C) |
Kiwango cha kuchemka | 2022 K (1749 °C) |
Asilimia za ganda la dunia | 2 · 10-3 % |
Hali maada | mango |
Mengineyo | Risasi ni elementi nzito isiyo nururifu |
Funga
Risasi (kutoka Kiarabu: رَصاص rasas; jina la kisayansi: plumbi linatokana na Kilatini "plumbum") ni elementi. Namba atomia yake ni 82 kwenye mfumo radidia na uzani atomia ni 118.710.