{"id":63089,"date":"2023-12-08T16:59:16","date_gmt":"2023-12-08T15:59:16","guid":{"rendered":"https:\/\/blog.salesflare.com\/entity\/lead"},"modified":"2023-12-08T16:59:16","modified_gmt":"2023-12-08T15:59:16","slug":"lead","status":"publish","type":"entity","link":"https:\/\/blog.salesflare.com\/sv\/entity\/bly","title":{"rendered":"bly"},"content":{"rendered":"<p class=\"translation-block\">Bly () \u00e4r ett kemiskt grund\u00e4mne i kolgruppen med symbolen Pb (fr\u00e5n ) och atomnummer 82. Bly \u00e4r en mjuk, formbar och tung post-transitionsmetall. Metalliskt bly har en bl\u00e5vit f\u00e4rg n\u00e4r det \u00e4r nyskuret, men det mattas snart till en tr\u00e5kig gr\u00e5aktig f\u00e4rg n\u00e4r det uts\u00e4tts f\u00f6r luft. Bly har en gl\u00e4nsande krom-silver-glans n\u00e4r det sm\u00e4lts till en v\u00e4tska. Det \u00e4r ocks\u00e5 det tyngsta icke-radioaktiva grund\u00e4mnet. Bly anv\u00e4nds i byggnadskonstruktioner, blybatterier, kulor och hagel, vikter, som en del av l\u00f6dningar, tenn, sm\u00e4ltbara legeringar och som str\u00e5lskydd. Bly har det h\u00f6gsta atomnumret av alla stabila grund\u00e4mnen, \u00e4ven om det n\u00e4st h\u00f6gsta grund\u00e4mnet, vismut, har en isotop med en halveringstid som \u00e4r s\u00e5 l\u00e5ng (\u00f6ver en miljard g\u00e5nger universums ber\u00e4knade \u00e5lder) att den kan betraktas som stabil. Blyets fyra stabila isotoper har 82 protoner, ett magiskt tal i k\u00e4rnskalsmodellen f\u00f6r atomk\u00e4rnor. Isotopen bly-208 har dessutom 126 neutroner, ett annat magiskt tal, och \u00e4r d\u00e4rmed dubbelmagisk, en egenskap som ger den \u00f6kad stabilitet: bly-208 \u00e4r den tyngsta k\u00e4nda stabila isotopen. Vid f\u00f6rt\u00e4ring \u00e4r bly giftigt f\u00f6r djur och m\u00e4nniskor och skadar nervsystemet och orsakar hj\u00e4rnst\u00f6rningar. F\u00f6r mycket bly orsakar ocks\u00e5 blodsjukdomar hos d\u00e4ggdjur. Bly \u00e4r ett nervgift som ansamlas b\u00e5de i mjukv\u00e4vnader och i skelettet. Blyf\u00f6rgiftning har dokumenterats fr\u00e5n det antika Rom, det antika Grekland och det antika Kina.<\/p>","protected":false},"excerpt":{"rendered":"<p>Lead () is a chemical element in the carbon group with symbol Pb (from ) and atomic number 82. 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