The previous methods of figuring the numbers of chemical elements is summed up in this paper. Based on that, another two creative calculative methods are introduced as well.
基金This work is supported by the National Science Foundation of China （No. 20471001 and 20671001）, the Important Project of Anhui Provincial Education Department （No. ZD2007004-1）, the Specific Project for Talents of Science and Technology of Universities of Anhui Province （No. 2005hbz03） and the Key Laboratory of Environment-friendly Polymer Materials of Anhui Province.
文摘The previous methods of figuring the numbers of chemical elements is summed up in this paper. Based on that, another two creative calculative methods are introduced as well.
