Fluorine (Element # 9) : 無料・フリー素材/写真
Fluorine (Element # 9) / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Fluorine (F) is # 9 on the Periodic Table of Elements. Elemental fluorine is an ~invisible gas. It occurs most commonly in fluorite - CaF2, calcium fluoride.Nineteen isotopes of fluorine are known - two occur naturally. Fluorine-19 is stable and fluorine-18 is unstable and radioactive. The latter only occurs in trace amounts.The box at upper right is "Teflon", a manmade material composed of C2F4 (two carbon atoms & four fluorine atoms) - it is 75% fluorine by weight.-----------------------------Info. at:en.wikipedia.org/wiki/Fluorineanden.wikipedia.org/wiki/Isotopes_of_fluorineandwww.flickr.com/photos/jsjgeology/albums/72157651913234900/ |
| 撮影日 | 2024-09-28 12:30:39 |
| 撮影者 | James St. John |
| タグ | |
| 撮影地 |