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Chemical Bonding and Molecular Structure

JEE Main 2024 (Online) 1st February Morning ShiftMCQMedium📈 Topic in 20% papers+4−1
Ques. 1JEE Main 2024, 1 February (Morning Shift)

Arrange the bonds in order of increasing ionic character in the molecules. LiF, K2O, N2, SO2 and ClF3 :

  1. N2 < SO2 < ClF3 < K2O < LiF
  2. ClF3 < N2 < SO2 < K2O < LiF
  3. LiF < K2O < ClF3 < SO2 < N2
  4. N2 < ClF3 < SO2 < K2O < LiF

Answer

(1) N2 < SO2 < ClF3 < K2O < LiF

Solution

Ionic character of a bond ∝ electronegativity difference (ΔEN) of the bonded atoms

N–N: ΔEN = 0 (pure covalent)

S–O: ΔEN ≈ 1.0 (polar covalent)

Cl–F: ΔEN ≈ 1.2 (F is the most electronegative element) ⇒ more polar than S–O

K–O: ΔEN ≈ 2.7 and Li–F: ΔEN ≈ 3.0 (metal–non-metal, ionic)

∴ N2 < SO2 < ClF3 < K2O < LiF

Answer: (1)

Keep practising — Chemical Bonding and Molecular Structure

Ques. 2JEE Main 2024, 1 February (Morning Shift)

The number of molecules/ion/s having trigonal bipyramidal shape is . PF5, BrF5, PCl5, [PtCl4]2-, BF3, Fe(CO)5

Ques. 3JEE Main 2024, 1 February (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 true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true
Ques. 4JEE Main 2024, 1 February (Evening Shift)

Select the compound from the following that will show intramolecular hydrogen bonding.

  1. [figure]
  2. H2O
  3. C2H5OH
  4. NH3
Ques. 5JEE Main 2024, 31 January (Morning Shift)

The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals Choose the most appropriate from the options given below:

  1. B, C, D only
  2. A, B, C only
  3. B and D only
  4. A and C only
Ques. 6JEE Main 2024, 31 January (Morning Shift)

The number of species from the following in which the central atom uses sp3 hybrid orbitals in its bonding is . NH3, SO2, SiO2, BeCl2, CO2, H2O, CH4, BF3

Ques. 7JEE Main 2024, 31 January (Evening Shift)

Which of the following is least ionic?

  1. CoCl2
  2. KCl
  3. BaCl2
  4. AgCl
Ques. 8JEE Main 2024, 31 January (Evening Shift)

A diatomic molecule has a dipole moment of 1.2 D. If the bond distance is 1 Å, then fractional charge on each atom is 10-1 esu. (Given 1 D = 10-18 esucm)

Ques. 9JEE Main 2024, 30 January (Morning Shift)

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

  1. A-I, B-II, C-IV, D-III
  2. A-IV, B-III, C-I, D-II
  3. A-III, B-IV, C-I, D-II
  4. A-II, B-I, C-III, D-IV
Ques. 10JEE Main 2024, 30 January (Morning Shift)

The total number of molecular orbitals formed from 2s and 2p atomic orbitals of a diatomic molecule is .

Ques. 11JEE Main 2024, 30 January (Evening Shift)

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

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

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