BBC2 年
Developing the periodic table
The modern periodic table has no gaps and has extended beyond what Mendeleev predicted. There were 64 elements when Mendeleev was working on his table and he predicted 4 more. Now the periodic ...
Scientific American1 个月
The Synthetic Elements
Four have filled gaps in the periodic table of 92 elements and five have extended it beyond uranium By I. Perlman & G. T. Seaborg Join Our Community of Science Lovers!
BBC2 年
Developing the periodic table
The modern periodic table has no gaps and has extended beyond what Mendeleev predicted. There were 64 elements when Mendeleev was working on his table and he predicted 4 more. Now the periodic ...