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Chemical Bonding and Molecular Structure

JEE Main 2026 (Online) 28th January Morning ShiftMCQEasy📈 Topic in 29% papers+4−1
Ques. 1JEE Main 2026, 28 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 false
  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 true

Answer

(1) Both Statement I and Statement II are false

Solution

Statement I:

BF4-: sp3, tetrahedral all four B–F bonds equal

SiF4: sp3, tetrahedral all four Si–F bonds equal

XeF4: sp3d2, square planar (2 lone pairs axial) all four Xe–F bonds equal

SF4: sp3d, see-saw (lone pair equatorial) 2 axial S–F bonds are longer than 2 equatorial S–F bonds

only one species (SF4) has unequal E–F bond lengths Statement I is false.

Statement II: bond order = 12(Nb - Na)

O2+ (15 e⁻): 10 - 52 = 2.5

O2- (17 e⁻): 10 - 72 = 1.5

O22- (18 e⁻): 10 - 82 = 1

F2 (18 e⁻): 10 - 82 = 1

O2+ (not O2-) has the highest bond order Statement II is false.

Answer: (1)

Keep practising — Chemical Bonding and Molecular Structure

Ques. 2JEE Main 2026, 28 January (Evening Shift)

Match List-I with List-II according to shape. Choose the correct answer from the options given below :

  1. A-II, B-III, C-I, D-IV
  2. A-III, B-II, C-IV, D-I
  3. A-II, B-III, C-IV, D-I
  4. A-II, B-I, C-III, D-IV
Ques. 3JEE Main 2026, 24 January (Morning Shift)

Given below are statements about some molecules/ions. Identify the CORRECT statements. Choose the correct answer from the options given below:

  1. B & C Only
  2. B, C & D Only
  3. A, C & D Only
  4. A, B, C, D & E
Ques. 4JEE Main 2026, 24 January (Morning Shift)

Among the following, the CORRECT combinations are Choose the correct answer from the options given below:

  1. B, C and D Only
  2. A, B, C and D
  3. A, B and C Only
  4. A and B Only
Ques. 5JEE Main 2026, 24 January (Evening Shift)

Pair of species among the following having same bond order as well as paramagnetic character will be-

  1. O2-, N2+
  2. O2+, N22-
  3. O2-, N2-
  4. O2+, N2-
Ques. 6JEE Main 2026, 23 January (Morning Shift)

Identify the molecule (X) with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among HNO3, H2SO4, NF3 and O3. Choose the correct bond angle made by the central atom of the molecule (X).

  1. 107
  2. 102
  3. 120
  4. 116
Ques. 7JEE 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
Ques. 8JEE 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. 9JEE 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. 10JEE 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. 11JEE 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

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