In contrast to natural elements, synthetic elements
1include all the elements in period62are formed by nuclear reactions that occur in the star
3include those elements that have atomic number greater than 93
4are created with the help of high temperture superconductors
In contrast to natural elements, synthetic elements?
2009-12-29 4:19 pm
回答 (1)
2009-12-29 4:32 pm
✔ 最佳答案
synthetic elements include those with atomic numbers of 93 and greater
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