Daily Practice Problems Chemical Bonding and Molecular Structure

Question1.

Number of π bonds and σ bonds in the following structure is

1) 7, 23

2) 7, 25

3) 7, 28

4) 7, 26

Question2.

If the electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d² 5s², the four electrons involved in chemical bond formation will be_____.

(i) 4p⁶

(ii) 4p⁶, 5s²

(iii) 4p⁶, 4d²

(iv) 4d², 5s²

Question3.

Which of the following angle corresponds to sp hybridisation?

(i) 90°

(ii) 120°

(iii) 180°

(iv) 109°

Question4.

The molecular formula of the compound formed from B and Cl will be

(i) BCl

(ii) B₂Cl

(iii) BCl₂

(iv) BCl₃

Question5.

Which among the following is paramagnetic?

(i) C₂

(ii) N₂^2–

(iii) F₂

(iv) O₂^2–

Question6.

Molecule is unstable

1) if N_b is greater than N_a

2) if Bond order is positive

3) if N_a is less than N_b

4) if Bond order is negative

Question7.
Explain whether melting point of compound showing intermolecular H-bonding is more or less than melting point of compound showing intramolecular H-bonding.

Question8.

Draw the resonance structures of Ozone molecule.

Question9.

NO⁺ is isoelectronic with

(i) CO

(ii) N₂

(iii) PbCl₂

(iv) NO₂^–

Question10.

Define

a) Bond Length

b) Bond angle

c) Bond Enthalpy

Question11.

State main postulates of VSEPR theory.

Question12.

Match the following:

Molecules Geometry

1) BeCl₂ a) Tetrahedral

2) CH₄ b) Octahedral

3) SF₆ c) Trigonal bipyramidal

4) BF₃ d) Linear

5) PCl₅ e) Trigonal planar

Question13.

Match the following:

Column 1 Column 2

1) Hydrogen bond a) sp³d

2) Polar Covalent Bond b) HF

3) SF₄ c) HCl

4) BrF₅ d) Linear

5) HC ≡ CH e) sp³d²

Question14.

The electronic configuration of the outer most shell of the least electronegative element is

(i) 2s² 2p⁵

(ii) 3s² 3p⁵

(iii) 4s² 4p⁵

(iv) 5s² 5p⁵

Question15.

In HNO₃, the number of bond pairs and lone pairs of electrons on nitrogen atom are

(i) 2, 2

(ii) 3, 1

(iii) 1, 3

(iv) 4, 0

Question16.

In CO₃^2– ion the formal charge on the oxygen atom of C–O bond is

(i) + 1

(ii) – 1

(iii) – 0.75

(iv) + 0.75

Question17.

What is octet rule? State limitations of Octet Rule.

Question18.

Define Lattice Enthalpy with an example.

Question19.

Which of the following species have identical bond order?

F₂, NO⁺, CN^-, O₂^2-

Question20.

Define Dipole moment. State its unit.

**********

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All About Daily Practice Problems on Class 11 Chemistry Chemical Bonding and Molecular Structure NCERT Chapter 4

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 11 Chemistry Chemical Bonding and Molecular Structure NCERT Chapter 4 useful.

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