question_answer 48)

  Which of the following arrangements represent increasing oxidation number of the central atom? (a) \[CrO_{2}^{-},ClO_{3}^{-},CrO_{4}^{2-},MnO_{4}^{-}\]                                           (b) \[ClO_{3}^{-},CrO_{4}^{2-},MnO_{4}^{-},CrO_{2}^{-}\] (c) \[CrO_{2}^{-},ClO_{3}^{-},MnO_{4}^{-},CrO_{4}^{2-}\]                                           (d) \[CrO_{4}^{2-},MnO_{4}^{-},CrO_{2}^{-},ClO_{3}^{-}\]

Answer:

  (a)       \[\frac{\overset{+3}{\mathop{CrO_{2}^{-}}}\,\,\,\,\overset{+5}{\mathop{ClO_{3}^{-}}}\,\,\,\,\overset{+6}{\mathop{CrO_{4}^{2-}}}\,\,\,\,\overset{+7}{\mathop{MnO_{4}^{-}}}\,}{Increasing\text{ }oxidation\text{ }state\text{ }of\text{ }central\text{ }atom}\]9.