- 问题详情:硒元素(selenium)是第四周期、VIA族元素,单质有红硒、黑硒和灰硒,其中灰硒有良好的导热导电*,且有显著的光电效应,可应用于光电半导体材料。请回答下列问题:(1)Se原子的核外电子排布式为[Ar] 。(2)As和Se是同一周期的元素,As的第一电离能比Se大,原因是 ...
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- acuteseleniumpoisoningThispaperstudiedthecontentdistributionandspeciesofseleniumintheaccumulatingseleniumcorngrain.Theselenium-richtoadcortexisatoadcortexwhichissupplementedwithseleniumduringthegrowthofatoadandismoltedinaselenium-richenvironment.Effe...
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