You're listening to Chemistry in its element brought to you by Chemistry World, the magazine of the Royal Society of Chemistry. Sodium, like most elements in the periodic table could be said to have a ...

The periodic table captures a subtle ... recur in every 8th element. Lithium, for example, with an atomic number of 3, is a reactive metal — just like sodium (element number 11) and potassium ...

Players read questions about energy levels and score points by picking the correct element as the answer. Electrons are in regions around the nucleus ... The atom with eight protons in its nucleus ...

The modern periodic table is based closely on the ideas he used. Cal: And how is it ordered? Mrs Roberts: So, the elements are arranged in order of increasing atomic number. The horizontal rows ...

The science of sleep and what happens when we don’t get enough But these four elements cannot complete the whole puzzle of ... almost one-quarter of the periodic table and are mainly found ...