Lead (Element # 82) : 無料・フリー素材/写真
Lead (Element # 82) / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Lead (Pb) is # 82 on the Periodic Table of Elements. Elemental lead is a grayish metal. Native lead does occur but is a rare mineral. The most common Pb-bearing mineral is galena (PbS, lead sulfide).Forty-three isotopes of lead are known - ten occur naturally. The most common variety is lead-208. Lead-206 and lead-207 occur in lesser amounts. Lead-204 occurs in small amounts. Lead-205, lead-209, lead-210, lead-211, lead-212, and lead-214 are radioactive and occur in trace amounts only.-----------------------------Info. at:en.wikipedia.org/wiki/Leadanden.wikipedia.org/wiki/Isotopes_of_leadandwww.flickr.com/photos/jsjgeology/albums/72157650318148694/andwww.flickr.com/photos/jsjgeology/albums/72157653306738909 |
| 撮影日 | 2024-09-28 12:42:44 |
| 撮影者 | James St. John |
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