Fill in the blank: elements in the same on the periodic table have the same number of valence electrons. properties of elements within a on a periodic table change in a predictable way from one side of the table to the other. the number of in an atom determines the identity of an element.

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action