main group

• 1. 主族: main group
• 2. 主族元素: main group
• 3. 第七主族: VIIA

更多释义

• 1.基础无机化学：主族元素及其化合物。
  General Inorganic Chemistry: main group elements and their compounds.
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• 2.每一周期以惰性气体的主族元素结束。
  Each period ends with a member of the family of elements called the noble gases.
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• 3.我想，你们可能认为第一主族，没有氢，而氢应该是最小的。
  I mean, you would expect that the group one, absent hydrogen, would be the ones that would have the least.
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