John Newlands took issue with the credit that Mendeleev was given for the periodic table in his book ‘On the Discovery of the Periodic ... The final piece in the puzzle wasn’t found until 1913, when ...

The finished puzzle is a section of the periodic table, so the numbers on each tile are their atomic numbers - that means they increase from left to right and top to bottom. Another helpful clue ...

Take your pick from this collection of links about elements and the periodic table! Build an element ball, solve periodic puzzles, and check out some of the most unusual periodic tables you’ve ever ...