1) Rate of decay a) Activity b) Alpha decay c) Beta decay d) Becquerel e) Radioisotope f) Nuclide 2) Mode of decay of heavy nuclides a) Activity b) Alpha decay c) Beta decay d) Becquerel e) Radioisotope f) Nuclide 3) Mode of decay of light nuclides a) Activity b) Alpha decay c) Beta decay d) Becquerel e) Radioisotope f) Nuclide 4) Unit of Activity a) Activity b) Alpha decay c) Beta decay d) Becquerel e) Radioisotope f) Nuclide 5) An unstable nuclide a) Activity b) Alpha decay c) Beta decay d) Becquerel e) Radioisotope f) Nuclide 6) A particular nuclear species a) Activity b) Alpha decay c) Beta decay d) Becquerel e) Radioisotope f) Nuclide

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