Srivaths–Labarca Periodic Table
In the new Srivaths–Labarca arrangement, the three main criteria proposed for the position of hydrogen and helium are simultaneously taken into account. Consequently, hydrogen is in between alkali metals and halogens, whereas helium is midway between the noble gases family and the alkaline earth elements.
On the Placement of Hydrogen and Helium in the Periodic System: a New Approach; Martín Labarca & Akash Srivaths, Chemistry: Bulgarian Journal of Science Education, Volume 25, Number 4, 2016
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