11. A metal ion M3+ loses 3 electrons, its oxidation number will be
12. The oxidation number of Sulphur in Na2S4O6 is
13. In oxygen di fluoride the oxidation number of oxygen is
14. Which of the following is a redox reaction?
15. Which reaction is not feasible?
16. The oxidation number of an element in a compound is evaluated on the basis of certain rules. Which of the following rules is not correct in this respect?
17. The largest oxidation number exhibited by an element depends on its outer electronic configuration. With which of the following outer electronic configurations the element will exhibit largest oxidation number?
18. Which of the following elements does not show disproportionation tendency?
19. What is known as Autooxidation?
20. The tendency of an electrode to lose electrons is known as
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