Each period of the periodic table ends with:

alkali metals such as na, k, li, and cs
period 7 elements
group viiia elements
the oxygen family
seven orbital shells

plz me ; -;

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.