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Chemical Bonding and Molecular Structure · Question 2

NEET (UG) 2026MCQMedium📈 Topic in 25% papers+4−1
1

The correct formal charges on oxygen atoms numbered 2, 1 and 3 respectively are : [figure]

  1. 0, 0, 0
  2. −1, 0, +1
  3. +1, 0, −1
  4. 0, +1, −1

Answer

(4) 0, +1, −1

Solution

Formal charge (F.C.) = (valence electrons) − (non-bonding electrons) − ½ (bonding electrons)

O(1) (central, one lone pair, three bonds): F.C. = 6 − 2 − ½(6) = +1

O(2) (two lone pairs, double bond): F.C. = 6 − 4 − ½(4) = 0

O(3) (three lone pairs, single bond): F.C. = 6 − 6 − ½(2) = −1

∴ For atoms 2, 1 and 3: 0, +1, −1 (as in NCERT's Lewis structure of O3)

Answer: (4)

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2

Match List-I with List-II :

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

The highest occupied molecular orbital for Ne2 is

  1. *2p
  2. 2p
  3. 2p
  4. *2p
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4

Match the species in List-I with their geometry in List-II.

  1. A-III, B-II, C-I, D-IV
  2. A-IV, B-III, C-I, D-II
  3. A-III, B-IV, C-I, D-II
  4. A-III, B-I, C-II, D-IV
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5

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

  1. Statement I is true but Statement II is false
  2. Statement I is false but Statement II is true
  3. Both Statement I and Statement II are true
  4. Both Statement I and Statement II are false
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6

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

  1. A-IV, B-II, C-III, D-I
  2. A-IV, B-II, C-I, D-III
  3. A-II, B-I, C-IV, D-III
  4. A-II, B-I, C-III, D-IV
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7

Identify the correct orders against the property mentioned Choose the correct answer from the options given below:

  1. A, C only
  2. B, C only
  3. A, D only
  4. B, D only
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8

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

  1. A-I, B-IV, C-II, D-III
  2. A-IV, B-III, C-II, D-I
  3. A-III, B-IV, C-II, D-I
  4. A-III, B-IV, C-I, D-II
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9

Intramolecular hydrogen bonding is present in

  1. [figure]
  2. [figure]
  3. [figure]
  4. HF
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10

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

  1. A-I, B-IV, C-II, D-III
  2. A-II, B-IV, C-III, D-I
  3. A-III, B-IV, C-I, D-II
  4. A-II, B-III, C-IV, D-I
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11

Identify the correct answer.

  1. Three resonance structures can be drawn for ozone
  2. BF3 has non-zero dipole moment
  3. Dipole moment of NF3 is greater than that of NH3
  4. Three canonical forms can be drawn for CO32- ion
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