The table below shows the example of Gallium, which Mendeleev called eka-aluminium, because it was the element after aluminium. Scandium and Germanium were the other two elements discovered by 1886, ...

For example, one oxygen atom combines with two hydrogen atoms to make water (H₂O). A Russian scientist called Dmitri Mendeleev produced one of the first practical periodic tables in the 19th ...

For example, the element symbol for iron is Fe, from the latin word ferrum for iron. On the periodic table, metals are found on the left and in the middle, and non-metals are on the right.

Each dirt sample is then compared to dirt found at the crime scene ... As part of the ChemClub's 10 th Anniversary, we asked clubs to create elements of the periodic table featuring a mole. The Period ...

The Periodic Table, first compiled by Russian chemist ... arranged in order of increasing atomic numbers. Hydrogen (H), for example, only has one proton, and is located at the top of the table ...