Jiya and Teena performed the following experiment. Jiya placed an iron nail in copper sulphate solution in test tube (a) whereas Teena placed a copper nail in iron sulphate solution in test tube (b). Write the observations of the two experiments. Represent both the reactions by means of chemical equations

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.