Given below are two statements :
Statement -I :The pentavalent oxide of group- 15 element. $\mathrm{E}_2 \mathrm{O}_5$.. is less acidic than trivalent oxide. $\mathrm{E}_2 \mathrm{O}_3$. of the same element.
Statement -II :The acidic character of trivalent oxide of group 15 elements. $\mathrm{E}_2 \mathrm{O}_3$. decreases down the group.
In light of the above statements. choose most appropriate answer from the options given below:
Select the correct option:
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
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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 : $\mathrm{E}_2 \mathrm{O}_5>\mathrm{E}_2 \mathrm{O}_3$
Down the group, acidic character of $\mathrm{E}_2 \mathrm{O}_3$ decreases
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