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, 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 captures a subtle pattern that ... you find that similar properties recur in every 8th element. Lithium, for example, with an atomic number of 3, is a reactive metal — just ...

The story of the last element to be discovered out of the first 92 catalogued in the periodic table is told by Eric ... Five years later, he reported that a sample of African pitchblende contained ...

A chemical element is one of those squares ... Let’s take chlorine as an example. It is positioned in group 7 of the periodic table because it has seven electrons in the outermost shell of ...