Image: PT blocks and 1st rows
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Description: An 18-column periodic table highlighting the first row of each block. Helium, shown here over beryllium, in group 2, on electron configuration grounds, is normally located above neon in group 18 since the resulting physiochemical trend lines going down the group are smoother.
Title: PT blocks and 1st rows
Credit: Own work
Author: Sandbh
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
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