IMPORTANT: All the elements in this quiz have atomic numbers between 1 and 110. No element appears more than once. The entire grid can be completed without guesswork. See below for a few definitions.
Definitions: Adjacent means that one cell is immediately adjacent to another, either vertically, horizontally, or diagonally. Symbol refers to an element's chemical symbol. Reversing the letters in a chemical symbol means, for example, changing Er (erbium) to Re (rhenium).
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