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p-Block Elements (Group 15–18) · Question 9

JEE Main 2026 (Online) 22nd January Evening ShiftMCQMedium📈 Topic in 29% papers+4−1
1

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Statement I is false but Statement II is true
  2. Statement I is true but Statement II is false
  3. Both Statement I and Statement II are false
  4. Both Statement I and Statement II are true

Answer

(2) Statement I is true but Statement II is false

Solution

Statement I: Electronegativity decreases down group 15: N (3.0) > P (2.1) > As (2.0) > Sb (1.9)

X = N (most), Y = Sb (least).

As per NCERT, N2O3 and P2O3 are acidic, As2O3 and Sb2O3 are amphoteric and Bi2O3 is basic.

X2O3 (N2O3) is acidic and Y2O3 (Sb2O3) is amphoteric. Statement I is true.

Statement II: BCl3 is covalent and is hydrolysed:

BCl3 + 3H2O B(OH)3 + 3HCl

B(OH)3 + 2H2O [B(OH)4]- + H3O+

B has no d orbitals, its maximum covalency is 4 [B(H2O)6]3+ cannot form (it is Al that gives [Al(H2O)6]3+ in water). Statement II is false.

Answer: (2)

JEE Main 2026 (Online) 22nd January Evening Shift

Keep practising — p-Block Elements (Group 15–18)

2

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is false but Statement II is true
  4. Statement I is true but Statement II is false
JEE Main 2026 (Online) 21st January Evening Shift
3

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below:

  1. Both Statement I and Statement II are true
  2. Statement I is true but Statement II is false
  3. Both Statement I and Statement II are false
  4. Statement I is false but Statement II is true
JEE Main 2025 (Online) 8th April Evening Shift
4

Given below are two statements: In the light of given statements, choose the correct answer from the options given below.

  1. Both Statement I and Statement II are true
  2. Statement I is true but Statement II is false
  3. Statement I is false but Statement II is true
  4. Both Statement I and Statement II are False
JEE Main 2025 (Online) 4th April Morning Shift
5

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

  1. Statement I is false but Statement II is true
  2. Both Statement I and Statement II are true
  3. Both Statement I and Statement II are false
  4. Statement I is true but Statement II is false
JEE Main 2025 (Online) 3rd April Morning Shift
6

The property/properties that show irregularity in first four elements of group-17 is/are Choose the correct answer from the options given below :

  1. A, B, C and D
  2. A and C only
  3. B only
  4. B and D only
JEE Main 2025 (Online) 2nd April Morning Shift
7

The nature of oxide (TeO2) and hydride (TeH2) formed by Te, respectively are:

  1. Reducing and basic
  2. Reducing and acidic
  3. Oxidising and acidic
  4. Oxidising and basic
JEE Main 2025 (Online) 2nd April Evening Shift
8

A group 15 element forms d - d bond with transition metals. It also forms a hydride, which is the strongest base among the hydrides of other group members that form d - d bond. The atomic number of the element is .

JEE Main 2025 (Online) 28th January Evening Shift

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