Sodium (Element # 11) 3 : 無料・フリー素材/写真
Sodium (Element # 11) 3 / 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 | Sodium (Na) is # 11 on the Periodic Table of Elements. Elemental sodium is a silvery-gray metal. It occurs in many minerals, the most famous of which is halite (NaCl, sodium chloride - "true salt"). Of the numerous dissolved chemicals in seawater, sodium cations (Na+) are the # 2 most common (chloride anions, Cl-, are # 1). When seawater evaporates, dissolved chemicals are left behind - principally halite. Such deposits are called "evaporites". Sodium is also common in plagioclase feldspar.Twenty-one isotopes of sodium are known - three occur naturally. Sodium-23 is the only stable variety. Sodium-22 and sodium-24 occur in trace amounts.-----------------------------Info. at:en.wikipedia.org/wiki/Sodiumanden.wikipedia.org/wiki/Isotopes_of_sodiumandwww.flickr.com/photos/jsjgeology/albums/72157675225879014 |
| 撮影日 | 2024-09-28 14:43:46 |
| 撮影者 | James St. John |
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