Hydrogen is placed on its own as it is quite a unique element. The periodic table can be read across from left to the right along the rows horizontally. It can also be read up and down the ...

Can France claim the first periodic table? Probably not, but a French Geology Professor made a significant advance towards it, even though at the time few people were aware of it. Alexandre Béguyer de ...

When Mendeleev first proposed his periodic table in 1869 he left gaps for elements not yet discovered, but that he predicted should exist. One such gap was one beneath caesium, a position later found ...

The elements are like pieces of a puzzle, each playing a unique and essential role in ... These are almost one-quarter of the periodic table and are mainly found in the first four periods.

Designed to engage children with a unique periodic table decoding challenge, this worksheet encourages them to solve puzzles using atomic numbers to spell out fall-themed words. Whether you’re a ...