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Acidic character of the oxides of group 15 elements

This type of question, asked 2 times: 28 Jun 2022, 22 Jan 2026 S2. All 2 questions below, oldest first.

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  1. Question 1

    28 Jun 2022

    37
    Given below are two statements: Statement -I: The pentavalent oxide of group- 15 element. E2O5E_{2}O_{5}. is less acidic than trivalent oxide. E2O3E_{2}O_{3}. of the same element. Statement -II: The acidic character of trivalent oxide of group 15 elements. E2O3E_{2}O_{3}. decreases down the group. In light of the above statements. choose most appropriate answer from the options given below:

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  2. Question 2

    22 Jan 2026 S2

    34
    Given below are two statements : Statement-I : Element ' X ' and  ′Y\ 'Y ' are the most and least electronegative elements, respectively among N,As,SbN,As,Sb and P . The nature of the oxides X2O3X_{2}O_{3} and Y2O3Y_{2}O_{3} is acidic and amphoteric, respectively. Statement-II : BCl3{BCl}_{3} is covalent in nature and gets hydrolysed in water. It produces [B(OH)4]−\left\lbrack B(OH)_{4} \right\rbrack^{-}and [B(H2O)6]3+\left\lbrack B\left( H_{2}O \right)_{6} \right\rbrack^{3 +} in aqueous medium. In the light of the above statements, choose the correct answer from the options given below :

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