CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Worksheet Set B

Read and download free pdf of CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Worksheet Set B. Download printable Chemistry Class 11 Worksheets in pdf format, CBSE Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Chemistry Class 11 Assignments and practice them daily to get better marks in tests and exams for Class 11. Free chapter wise worksheets with answers have been designed by Class 11 teachers as per latest examination pattern

Chapter 4 Chemical Bonding and Molecular Structure Chemistry Worksheet for Class 11

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Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure Worksheet Pdf

CHEMICAL BONDING AND MOLECULAR STRUCTURE
 
1 What are
a) expanded octet molecules?
b) odd electron molecules?
c) electron deficient molecules?
 
Give two examples for each.
 
2 Differentiate between
 
a) Bond energy and Bond dissociation energy
b) Covalent and Van der Waal’s radius
 
3 Explain resonance and draw the resonating structures for the following:
 
CO32- , NO3, SO2, C6H6
 
4 Give reasons:
a) BF3 is non-polar while NF3 is polar.
b) ClF3 is T-shaped.
c) Bonds in ozone are equivalent.
d) Bond angle in water is larger than bond angle in H2S
 
5 Which is more polar and why: NH3 and NF3
 
6 Define the term bond length. Arrange the following in the increasing order of their bond lengths: Ethane, ethene, ethyne
 
7 Define the term bond angle. Arrange the following in the increasing order of their bond angle: Water, ammonia, methane, carbon dioxide
 
8 What do you understand by formal charge of a molecule? Calculate the formal charges on all the atoms in the following species
 
i. HClO4
ii. HSO4
 
9 Discuss the shapes of the following molecules using VSEPR model
 
BCl3, H2O, XeF4, SF4, NH4+
 
10 a) Define lattice enthalpy. How is it related to the stability of ionic compound?
b) Write the favorable conditions for the formation of ionic bond.
Valence bond theory ,Molecular orbital theory ,Hydrogen bonding
 
11 Atomic orbital is monocentric while a molecular orbital is polycentric‖. Explain.
 
12 Differentiate between
a) Bonding and antibonding molecular orbital.
b) Sigma and pi bond
 
13 Give reasons:
a) px orbital does not overlap with py orbital.
b) Oxygen is paramagnetic.
c) Acetic acid forms dimer.
d) Para nitro phenol has higher boiling point than ortho nitro phenol.
e) Hydrogen bonding in HCl is insignificant.
f) HF has a higher boiling point than HCl.
g) Axial bonds are longer than equatorial bonds in PCl5
 
14 Explain the formation of PCl5 and SF6 on the basis of hybridization.
 
15 Write the energy level diagram for O2- and O2+. Calculate the bond order.
 
16 Draw orbital overlap diagram for the following:
a) H3O+
b) H2O2
c) NH3
 
17 Which hybrid orbitals are used by the carbon atoms in the following molecules?
a. CH3-CH=CH2
b. CH3-CH2-OH
c. CH3CHO
d. CH3COOH
 
18 Predict the hybridization in the following molecules H2O, NH4+, SO42-, ClO3-, IF5
 
19 Using suitable example explain following type of hybridization
a) sp
b) sp2
c) sp3
 
20 Using molecular orbital theory, explain why Be2 molecule does not exist.


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CBSE Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure Worksheet

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