For example, the element mercury is shown as Hg. It must not be shown as HG, hg or hG. The periodic table shows the names and symbols of the elements. It’s important to recognise which elements are ...

THIS is a set of cardboard pieces printed with the symbols of elements and common radicles, and graduated in size according to predominant valency; positive radicles are blue, negative are pink. The ...

Each element in the periodic table is represented by its own chemical symbol. A chemical symbol has one or two letters, and it must always start with a capital letter. Any second letter must always be ...