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Chemical Bonding and Molecular Structure · Question 4

RE-NEET (UG) 2026MCQEasy📈 Topic in 62% papers+4−1
1

The highest occupied molecular orbital for Ne2 is

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

Answer

(1) *2p

Solution

Ne2 contains a total of 20 electrons. Its molecular orbital electronic configuration is:

1s2 *21s 2s2 *22s 2pz2 ( 2px2 = 2py2) ( *22px = *22py) *22pz.

The orbital of highest energy containing electrons (HOMO) is *2p. Answer: (1)

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2

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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3

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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4

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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5

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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6

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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7

Intramolecular hydrogen bonding is present in

  1. [figure]
  2. [figure]
  3. [figure]
  4. HF
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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-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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9

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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10

Which of the following molecules has "NON ZERO" dipole moment value?

  1. CCl4
  2. HI
  3. CO2
  4. BF3
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11

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
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