The Periodic Table of Elements or Mendeleevs Table in Colour on a Cotton Tea Towel by Half a Donkey. This large cotton tea towel has the periodic table of elements in easy to read form. Featuring all the traditional groups, metals, transition elements, the Halogens etc. In the table, the elements are placed in the order of their atomic numbers starting with the lowest number of one, hydrogen. The atomic number of an element is the same as the number of protons in that particular nucleus of an atom. In the periodic table the elements are arranged into periods and groups.Made from 100% cotton, hemmed on 4 sides. Cotton is high quality 185gsm. The dimensions of the Tea Towel are: 47cm (w) x 65cm (h). From the Series 10 Educational Range by Half a Donkey