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Given below are two statements : Statement -I : The pentavalent oxide of group- 15 element. E2O5. is less acidic than trivalent oxide. E2O3. of the same element. Statement -II :The acidic character of trivalent oxide of group 15 elements. E2O3. decreases down the group.In light of the above statements. choose most appropriate answer from the options given below: (A) Both Statement I and Statement II are true. (B) Both Statement I and Statement II are false. (C) Statement I true. but statement II is false. (D) Statement I is false but statement II is true. |
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Answer» (D) Statement I is false but statement II is true. As +ve oxidation state increases, EN of element increases hence acidic character increases. Down the group, non-metallic character decreases, acidic character decreases. Acidic character : E2 O5 > E2 O3 Down the group, acidic character of E2O3 decreases |
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