Click to enlarge image. When Dmitri Mendeleev drew up the periodic table, he grouped elements of similar properties. Based on the number of electrons, a scientist can determine which group to place an ...

Scientists have found that our bodies need 28 different elements to function properly. These are almost one-quarter of the periodic table and are mainly found in the first four periods.

With Oxygen so you can breathe And Fluorine for your pretty teeth Neon to light up the signs Sodium for salty times Magnesium, Aluminium, Silicon Phosphorus, then Sulfur, Chlorine and Argon Potassium, ...

Dramatic changes in physical properties occur on descending group 16 of the periodic table. Oxygen, of course, is a gas, polonium a metal, and the in-between elements, sulfur, selenium and ...

With its atomic number of 3, lithium is located in the top left corner of the periodic table. It was Johann August Arfvedson, one of Jöns Jakob Berzelius's students, who first detected its ...

PlayStation Plus free games change at the start of every month, and coming in at no extra cost to PS Plus members, these free games are a great way to expand your library on the cheap or pick up ...