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Chemical Bonding and Molecular Structure

JEE Main 2026 (Online) 23rd January Evening ShiftMCQHard📈 Topic in 29% papers+4−1
Ques. 1JEE Main 2026, 23 January (Evening Shift)

Which statements are NOT TRUE about XeO2F2? Choose the correct answer from the options given below :

  1. B, D and E Only
  2. B and D Only
  3. B, C and E Only
  4. A and D Only

Answer

(3) B, C and E Only

Solution

In XeO2F2, Xe forms two Xe=O double bonds and two Xe–F single bonds and keeps one lone pair.

σ-bond pairs = 4, lone pair = 1 sp3d, trigonal bipyramidal arrangement with lone pair equatorial see-saw shape. A is true.

Electrons in the valence shell of Xe = 2 × 4 (two Xe=O) + 2 × 2 (two Xe–F) + 2 (lone pair) = 14 electrons = 7 electron pairs.

B (5 electron pairs) and E (16 electrons) are not true.

The two O atoms are equatorial: O–Xe–O angle ≈ 105° (not 180°) C is not true.

The two F atoms are axial: F–Xe–F angle ≈ 174°, close to 180° D is true.

NOT TRUE: B, C and E.

Answer: (3)

Keep practising — Chemical Bonding and Molecular Structure

Ques. 2JEE Main 2026, 22 January (Morning Shift)

Two p-block elements X and Y form fluorides of the type EF3. The fluoride compound XF3 is a Lewis acid and YF3 is a Lewis base. The hybridizations of the central atoms of XF3 and YF3 respectively are

  1. sp2 and sp3
  2. Both sp3
  3. Both sp2
  4. sp3 and sp2
Ques. 3JEE Main 2026, 22 January (Morning Shift)

The formal charges on the atoms marked as (1) to (4) in the Lewis representation of HNO3 molecule respectively are [figure]

  1. 0, 0, -1, +1
  2. 0, -1, 0, +1
  3. 0, +1, 0, -1
  4. +1, 0, 0, -1
Ques. 4JEE Main 2026, 22 January (Evening Shift)

Among H2S, H2O, NF3, NH3 and CHCl3, identify the molecule (X) with lowest dipole moment value. The number of lone pairs of electrons present on the central atom of the molecule (X) is :

  1. 3
  2. 2
  3. 0
  4. 1
Ques. 5JEE Main 2026, 21 January (Morning Shift)

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. Statement I is false but Statement II is true
  4. Both Statement I and Statement II are false
Ques. 6JEE Main 2026, 21 January (Evening Shift)

The correct increasing order of C-H(A), C-O(B), C=O(C) and C N(D) bonds in terms of covalent bond length is :

  1. D < C < B < A
  2. D < C < A < B
  3. A < B < C < D
  4. A < D < C < B
Ques. 7JEE Main 2025, 7 April (Morning Shift)

Match the List I with List II. Choose the correct answer from the options given below:

  1. A-IV, B-III, C-II, D-I
  2. A-III, B-IV, C-I, D-II
  3. A-II, B-I, C-IV, D-III
  4. A-III, B-IV, C-II, D-I
Ques. 8JEE Main 2025, 7 April (Evening Shift)

In SO2, NO2- and N3-, the hybridizations at the central atom are respectively :

  1. sp2, sp2 and sp2
  2. sp, sp2 and sp
  3. sp2, sp and sp
  4. sp2, sp2 and sp
Ques. 9JEE Main 2025, 4 April (Morning Shift)

Which of the following molecule(s) show/s paramagnetic behavior? Choose the correct answer from the options given below:

  1. A & C only
  2. A & E Only
  3. A & D Only
  4. B Only
Ques. 10JEE Main 2025, 4 April (Evening Shift)

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

  1. Both Statement I and Statement II are correct
  2. Both Statement I and Statement II are incorrect
  3. Statement I is correct but Statement II is incorrect
  4. Statement I is incorrect but Statement II is correct
Ques. 11JEE Main 2025, 3 April (Morning Shift)

Match the LIST-I with LIST-II Choose the correct answer from the options given below:

  1. A-IV, B-I, C-II, D-III
  2. A-III, B-I, C-IV, D-II
  3. A-II, B-III, C-IV, D-I
  4. A-I, B-II, C-III, D-IV

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