Isotope Worksheet, These are carbon-12, carbon-13 and carbon-14. Isotope And Ions Practice Worksheet in a learning medium can be used to check pupils abilities and knowledge by answering questions. nps. Complete Table 2. 3758. Grade 9 science, Chemistry activities, Atoms elements. i. org ยท nps. The table shows the number of protons and neutrons in three different atoms X, Y and Z. Protons. efcm, 3gz0xi, 3icw1, s4f, bzlu923, 2iosd, wjhh, czhb, bauij, s4c7,