銪
From Wikipedia, the free encyclopedia
From Wikipedia, the free encyclopedia
銪，化學元素也，符號為Eu，原子序六十三。屬鑭系元素、稀土金屬。呈銀色、頗硬。庶幾無毒，見異於重金屬。處空氣與水之中，亟於氧化。有類諸鑭系元素，氧化態以正三為最常，正二次之。而銪二價鹽，皆為還原劑。其化合物可生磷光。
宇宙之中，所佔幾稀，百億物質，僅有其五。
| 聲音動静，具錄於維基共享︰銪 |
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