the order of the elements in periodic table is determined by the atomic number of the elements
phosphorus_atom is atom. each_element_in_periodic_table has number_associated_with each_element_in_periodic_table has not number_associated_with periodic_table is table. atomic_number is number. list_of_elements is not list. identification_particle is atom. poly_atomic_chemical_object is group_of_atoms. list_of_elements is list. ionic_order is order.