Chemistry Class 11 NCERT Solutions: Chapter 3 Classification of Elements and Periodicity Part 7

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Q: 40. Considering the elements ,the correct order of their chemical reactivity in terms of oxidizing property is:






The oxidizing character of elements increases from left to right across a period. Thus, we get the decreasing order of oxidizing property as

Again, the oxidizing character of elements decreases down a group. Thus, we get .

However, the oxidizing character of is more than that of i.e, .

Hence, the correct order of chemical reactivity of in terms of their oxidizing property is

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