Period 5 is one of the 7 element periods proven to exist. Everything in this period has 5 electron shells. Like most periods, their are 18 elements in the period, and these are: #Name 37Rb 38Sr 39Y 40Zr 41Nb 42Mo 43Tc 44Ru 45Rh 46Pd 47Ag 48Cd 49In 50Sn 51Sb 52Te 53I 54Xe This article is a stub. You can help Elements Wiki by expanding it. Categories: Article stubs Element groups Element periods Period 5 Add category Cancel Save