Given below are two statements: Statement -I: The pentavalent oxide of group- 15 element. E 2 O 5. is less acidic than trivalent oxide. E 2 O 3. of the same element. Statement -II :The acidic character of trivalent oxide of group 15 elements. E 2 O 3. decreases down the group. In light of the above statements. choose most appropriate answer from the options given below:

Question

Given below are two statements: Statement -I: The pentavalent oxide of group- 15 element. E 2 O 5. is less acidic than trivalent oxide. E 2 O 3. of the same element. Statement -II :The acidic character of trivalent oxide of group 15 elements. E 2 O 3. 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 is true but statement-II is false. (D) Statement-I is false but statement-II is true

Tardigrade Admin · Accepted Answer

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 :

E_{2} O_{5} > E_{2} O_{3}

Down the group, acidic character of

E_{2} O_{3}

decreases

Both statement—I and statement-II are true.

Both statement—I and statement-II are false.

Statement-I is true but statement-II is false.

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 E2​O3​ decreases

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 : $E_{2} O_{5} > E_{2} O_{3}$
Down the group, acidic character of $E_{2} O_{3}$ decreases