The chemical formula for rubies is ai2o3 list the elements that combine to form a ruby and the number of atoms of each element in a single molecule of the gem ?

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.