Part B: Arrange the elements in decreasing (most to least) order of the number of valence electrons
Group Number = number of valence electrons
In decreasing order of valence electrons, we have:
Part B: Arrange the elements in decreasing order of the number of valence electrons. Rank from most to least number of valence electrons. To rank items as equivalent, overlap them.
Part C: Number the rows within each block of the periodic table according to the shell for the highest-energy electrons in an atom of those elements. Drag the appropriate labels to their respective targets.
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