At the end of this activity, students should be able to: -- say what information can be obtained from the atomic number -- determine the number of protons and the total number of electrons in an atom on the basis of the atomic number -- determine the composition of atomic nuclei, given the atomic number and the mass number -- explain the term isotope -- discuss the similarities and differences between hydrogen isotopes -- calculate the percentage abundance of a given isotope.

Originally released by Learnetic, 2016.