In doing so , they have shown that the predictions of chemistry ' s central blueprint , dmitri mendeleev ' s periodic table , extend reliably into the realm of heavy , short - lived , radioactive elements that do not exist in nature 在這些工作中,他們顯示預(yù)測(cè)化學(xué)的主要藍(lán)圖:門捷列夫的元素周期表,即拓展自然界不存在的但可信賴的重的,短期,放的射性的元素。