1.Na是第三周期元素,其他都是第二周期,哪怕是稀有气体也一样.
2.我想题的意思是能在室温下点燃蜡烛,除此之外实在想不到别的原因了.
3.producing copper metal 错,Cu在酸性条件下会与NO3-发生氧化还原反应,生成Cu2+与气体NO2.
几道SAT2化学1.Which of the following elements would have the lar
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