The periodic table The periodic table is a chart of all the elements arranged in increasing atomic number ... bromine and iodine. The word ‘halogen’ means 'salt former'.

The atomic number of tellurium is 52 and the atomic number of iodine is 53, so these elements are in the correct order in the modern periodic table.

Until recently there had been few in situ methods available for the structure determination of an electrode surface in solution at the atomic level. However, in situ scanning tunneling ... were ...