
Happy Sesquicentennial, Periodic Table!
The organizing scheme that revolutionized our understanding of the chemical elements turns 150 in 2019
The organizing scheme that revolutionized our understanding of the chemical elements turns 150 in 2019
The identity of the "discoverer" of this halogen element very much depends on the nationality of the textbook that one might consult
The discovery of element 117 filled the last remaining gap in the periodic table as we know it. But even as it is being completed, the table may be losing its power
Dating from the mid-1800s, the periodic table took decades to develop and was critical to atomic theory and quantum mechanics
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