question_answer 73)

    Which of the following actinoids show oxidation states upto +7? (a) Am                                  (b) Pu            (c) U                                      (d) Np

Answer:

                    (b, d) The oxidation states of the following actinoids are Americium (Z = 95); Electronic configuration = Oxidation states shown by Am = + 3, + 4, + 5, + 6. (b) Plutonium (Z = 94); Electronic configuration = Oxidation states shown by Pu = + 3, + 4, + 5, + 6, + 7. (c) Uranium (Z = 92); Electronic configuration = Oxidation states shown by U = + 3, + 4, + 5, + 6. (d) Neptunium (Z = 93); Electronic configuration = Oxidation states shown by Np = + 3, + 4, + 5, + 6, + 7.