Arrangement with the elements of the second main groupof the periodic system. From left: beryllium, Magnesium, Calcium, Strontium, Barium, and Radium represented with a compound.图片
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Arrangement with the elements of the second main groupof the periodic system. From left: beryllium, Magnesium, Calcium, Strontium, Barium, and Radium represented with a compound.
素材ID:376096645

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  • 格式:JPG
  • 作者:Kim
  • 最大分辨率:3585 x 2307px
  • 最大输出:30.35 x 19.53cm (300dpi) | 126.47 x 81.39cm (72dpi)

关键词

系统放射性地球安排元素周期性氧化金属教育第二无功科学