The Periodic Table: Its Story and Its Significance

periodic table  Its Story and Its Significance Eric R Scerri Table Fragment of Mendeleev's Periodic Table of 1904 Showing the Positions of Predicted Elements x and It is called periodic because elements are lined up in cycles or periods From left to right elements are lined up in rows based on their atomic number (the

Each element within the periodic table has its own block Within these blocks are identifying numbers and letters The number on the very top is called the The alkaline earth metals represent the second column on the periodic table Its six elements extend from beryllium to radium These

Explore the Periodic Table in a clear and interactive view Hover over the groups, see the atomic numbers, view the symbols and more! eriodic Table of Elements Li7 3 lithium Na23 11 sodium K39 19 potassium Rb85 37 rubidium Cs133 55 caesium Fr 87 * The Lanthanides (atomic