Chemistry, 26.10.2020 17:00 ayoismeisalex
A series of five short lines. The first has an up and a down arrow, and is labeled below 1 s. The second has an up and a down arrow, and is labeled 2 s. The third has an up arrow and no label. The fourth has an up arrow and is labeled 2 p. The fifth has an up arrow and no label.
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A series of five short lines. The first has an up and a down arrow, and is labeled below 1 s. The se...
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