11th Class Chemistry Redox Reactions Question Bank 11th CBSE Chemistry Redox Reactions

  • question_answer What are the maximum and minimum oxidation numbers of N, S and Cl?

    Answer:

                                    (i) The highest oxidation number (O.N.) of N is +5 since it has five electrons in the valence shell \[(2\,{{s}^{2}}\,2\,{{p}^{3}})\]and its minimum O.N. is -3 since it can accept three more electrons to acquire the nearest inert gas (Ne) configuration. (ii) Similarly, the highest O.N. of S is +6 since it has six electrons in the valence shell \[(3\,{{s}^{2}}3\,{{p}^{4}})\] and its minimum O.N. is -2 since it needs two more electrons to acquire the nearest inert gas \[(Ar)\] configuration. (iii) Likewise the maximum O.N. of \[Cl\] is +7 since it has seven electrons in the valence shell \[(3\,{{s}^{2}}\,3\,{{p}^{5}})\] and its minimum O.N. is -1 since it needs only one more electron to acquire the nearest \[(Ar)\] gas configuration.


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