From Wikipedia, the free encyclopedia
锕系元素是第89号元素锕到103号元素铹共总15种放射性元素个统称。锕系元素也属于过渡元素,只是锕系元素个外层搭次外层个电子构型基本相同,新增加个电子则大都数填入了从外侧数第三个电子层(即5f电子层)中,所以锕系元素又可以称为5f系。
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