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Chemical Bonding and Molecular Structure · Question 100

AIPMT 2002MCQEasy📈 Topic in 0% papers+4−1
1

Which of the following has p - d bonding?

  1. NO3-
  2. SO32-
  3. BO33-
  4. CO32-

Answer

(2) SO32-

Solution

p - d bonding needs a central atom with vacant d orbitals, i.e. an element of the third period or beyond.

⇒ N, B and C (second period) have no d orbitals, so NO3-, BO33- and CO32- can form only p - p bonds.

⇒ In SO32-, S (third period) uses its 3d orbital to form the S=O π bond with a 2p orbital of O.

∴ SO32- has p - d bonding.

Answer: (2)

AIPMT 2002

Keep practising — Chemical Bonding and Molecular Structure

2

In NO3- ion number of bond pair and lone pair of electrons on nitrogen atom are

  1. 2, 2
  2. 3, 1
  3. 1, 3
  4. 4, 0
AIPMT 2002
3

Main axis of a diatomic molecule is z, atomic orbitals px and py overlap to form which of the following orbitals.

  1. molecular orbital
  2. molecular orbital
  3. molecular orbital
  4. No bond will form
AIPMT 2001
4

Which of the following two are isostructural?

  1. XeF2, IF2-
  2. NH3, BF3
  3. CO32-, SO32-
  4. PCl5, ICl5
AIPMT 2001
5

In which of the following bond angle is maximum ?

  1. NH3
  2. NH4+
  3. PCl3
  4. SCl2
AIPMT 2001
6

In X-H Y, X and Y both are electronegative elements. Then

  1. electron density on X will increase and on H will decrease
  2. in both electron density will increase
  3. in both electron density will decrease
  4. on X electron density will decrease and on H will increase.
AIPMT 2001
7

d - p bond present in

  1. CO32-
  2. PO43-
  3. NO3-
  4. NO2-
AIPMT 2000
8

Right order of dissociation energy N2 and N2+ is

  1. N2 > N2+
  2. N2 = N2+
  3. N2+ > N2
  4. none
AIPMT 2000
9

Which species does not exhibit paramagnetism?

  1. N2+
  2. O2-
  3. CO
  4. NO
AIPMT 2000
10

Which compound forms linear polymer due to H-bond?

  1. H2O
  2. NH3
  3. HF
  4. HCl
Out of syllabusAIPMT 2000

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