That’s why this periodic table clock really caught our eye. [gocivici]’s idea is a simple one: light up three different elements with three different colors for hours, minutes, and seconds ...
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.
Experimental observations of the half life of rutherfordium-252 demonstrate that its stability lies well within the limits required for full atoms to form ...