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Chemical Bonding and Molecular Structure · Question 14

RE-NEET (UG) 2024MCQEasy📈 Topic in 75% papers+4−1
1

Identify the incorrect statement about PCl5.

  1. PCl5 possesses two different Cl-P-Cl bond angles
  2. All five P-Cl bonds are identical in length
  3. PCl5 exhibits sp3d hybridisation
  4. PCl5 consists of five P-Cl (sigma) bonds

Answer

(2) All five P-Cl bonds are identical in length

Solution

In PCl5, P is sp3d hybridised and the molecule is trigonal bipyramidal with five P–Cl σ bonds.

Bond angles: 120 (equatorial–equatorial) and 90 (axial–equatorial), so (1) is correct.

The two axial bonds (about 240 pm) suffer more repulsion and are longer than the three equatorial bonds (about 202 pm), so the five bonds are not identical in length.

Statement (2) is incorrect.

Answer: (2)

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2

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

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

Amongst the following, the total number of species NOT having eight electrons around central atom in its outermost shell, is NH3, AlCl3, BeCl2, CCl4, PCl5

  1. 2
  2. 4
  3. 1
  4. 3
NEET (UG) 2023
4

The correct order of energies of molecular orbitals of N2 molecule, is

  1. 1s < 1s < 2s < 2s < 2pz < ( 2px = 2py) < ( 2px = 2py) < 2pz
  2. 1s < 1s < 2s < 2s < 2pz < 2pz < ( 2px = 2py) < ( 2px = 2py)
  3. 1s < 1s < 2s < 2s < ( 2px = 2py) < ( 2px = 2py) < 2pz < 2pz
  4. 1s < 1s < 2s < 2s < ( 2px = 2py) < 2pz < ( 2px = 2py) < 2pz
NEET (UG) 2023
5

Amongst the following which one will have maximum 'lone pair - lone pair' electron repulsions?

  1. ClF3
  2. IF5
  3. SF4
  4. XeF2
NEET (UG) 2022
6

Which amongst the following is incorrect statement?

  1. The bond orders of O2+, O2, O2- and O22- are 2.5, 2, 1.5 and 1, respectively
  2. C2 molecule has four electrons in its two degenerate molecular orbitals
  3. H2+ ion has one electron
  4. O2+ ion is diamagnetic
NEET (UG) 2022
7

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

  1. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
  2. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
  3. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
  4. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
NEET (UG) 2022 (Phase 2)
8

The correct order of bond angles in the following compounds/species is :

  1. CO2 < NH3 < H2O < +NH4
  2. H2O < NH3 < +NH4 < CO2
  3. H2O < +NH4 < NH3 < CO2
  4. H2O < +NH4 = NH3 < CO2
NEET (UG) 2022 (Phase 2)
9

BF3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :

  1. sp2 and 8
  2. sp3 and 4
  3. sp3 and 6
  4. sp2 and 6
NEET (UG) 2021
10

Match 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)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
  3. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
  4. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
NEET (UG) 2021
11

Which of the following molecules is non-polar in nature?

  1. NO2
  2. POCl3
  3. CH2O
  4. SbCl5
NEET (UG) 2021

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