PYQSidePowered byPrepblink ExamsMy practice

Chemical Bonding and Molecular Structure

JEE Main 2024 (Online) 4th April Morning ShiftNumericalEasy📈 Topic in 29% papers+4
Ques. 1JEE Main 2024, 4 April (Morning Shift)

Number of molecules/species from the following having one unpaired electron is . O2, O2-1, NO, CN-1, O22-

Answer

2

Solution

MOT — count electrons in the antibonding *2p orbitals:

O2 (16 e): *2px1 *2py1 ⇒ 2 unpaired

O2- (17 e): *2px2 *2py1 ⇒ 1 unpaired ✓

NO (15 e): *2px1 ⇒ 1 unpaired ✓

CN- (14 e, like N2): all paired ⇒ 0

O22- (18 e): * full ⇒ 0

∴ O2- and NO ⇒ 2

Answer: 2

Keep practising — Chemical Bonding and Molecular Structure

Ques. 2JEE Main 2024, 4 April (Evening Shift)

The correct statement/s about Hydrogen bonding is/are Choose the correct answer from the options given below:

  1. A, B, C only
  2. A only
  3. A, D, E only
  4. A, B, D only
Ques. 3JEE Main 2024, 4 April (Evening Shift)

The number of species from the following that have pyramidal geometry around the central atom is S2O32-, SO42-, SO32-, S2O72-

  1. 4
  2. 3
  3. 2
  4. 1
Ques. 4JEE Main 2024, 4 April (Evening Shift)

Number of compounds / species from the following with non-zero dipole moment is . BeCl2, BCl3, NF3, XeF4, CCl4, H2O, H2S, HBr, CO2, H2, HCl

Ques. 5JEE 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
Ques. 6JEE 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. 7JEE 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. 8JEE 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. 9JEE 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. 10JEE 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. 11JEE Main 2024, 31 January (Evening Shift)

Which of the following is least ionic?

  1. CoCl2
  2. KCl
  3. BaCl2
  4. AgCl

All Chemical Bonding and Molecular Structure PYQs →

PDFDownload Chemical Bonding and Molecular Structure PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All JEE Main Chemistry chapters