- 問題詳情:硒元素(selenium)是第四周期、VIA族元素,單質有紅硒、黑硒和灰硒,其中灰硒有良好的導熱導電*,且有顯著的光電效應,可應用於光電半導體材料。請回答下列問題:(1)Se原子的核外電子排布式為[Ar] 。(2)As和Se是同一週期的元素,As的第一電離能比Se大,原因是 ...
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- acuteseleniumpoisoningThispaperstudiedthecontentdistributionandspeciesofseleniumintheaccumulatingseleniumcorngrain.Theselenium-richtoadcortexisatoadcortexwhichissupplementedwithseleniumduringthegrowthofatoadandismoltedinaselenium-richenvironment.Effe...
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