The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

as well as the legacy of past iodine deficiency. Here are a few juicy nuggets about element number 53 on the periodic table, and its extraordinary uses. Seaweed, plankton, bacteria and some simple ...

Click on the images below to automatically tweet the element infographics. Download the PDFs to make your own wall displays or education resources. We've also created a range of IYPT-themed, ...

The periodic table The periodic table is a chart ... The three common Group 7 elements are chlorine, bromine and iodine. The word ‘halogen’ means 'salt former'. Group 0 and testing ions ...