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Up one levelアルカリ金属
- H by member — last modified 2007-03-19 14:50
- 水素: 宇宙で最も多い元素、地球表面や生体で3番目に多い元素
- Li by member — last modified 2007-03-19 14:50
- Na by member — last modified 2007-03-19 14:50
- ナトリウム: 食塩や炭酸ソーダの成分
- K by member — last modified 2007-03-19 14:50
- カリウム: カリウムとは中世ラテン語由来で、英語ではポタシウム
- Rb by member — last modified 2007-03-19 14:50
- Cs by member — last modified 2007-03-19 14:50
- Fr by member — last modified 2007-03-19 14:50