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CBSE - Class 11 Chemistry Chemical Bonding and Molecular Structure Worksheet

Identify which molecule can have Highiest Lattice energy among the following molecules?

NaCl

MgCl2

AlCl3

SiCl4

Explain the important aspects of resonance with reference to the $CO_3^{2-}$ ion.

What do you understand by bond pairs and lone pairs of electrons? Illustrate by giving one exmaple of each type.

Explain with the help of suitable example polar covalent bond.

Draw the Lewis structures for the following molecules and ions : $H_2S$, $SiCl_4$, $BeF_2$, $CO_3^{2-}$, $HCOOH$

Which hybrid orbitals are used by carbon atoms in the following molecules? (e) $CH_3COOH$

Inorganic compounds are componds that lack

carbon-oxygen bond

carbon-hydrogen bond

oxygen-hydrogen bond

nitrogen-hydrogen bond

Distinguish between a sigma and a pi bond.

What is meant by hybridisation of atomic orbitals? Describe the shapes of $sp$, $sp^2$, $sp^3$ hybrid orbitals.

10.

Define the bond length.

11.

Which of the following have non zero dipole moment ?

PF5

PF2Cl3

PF3Cl2

PCl5

12.

The maximum number of molecules are present in

50 l H2 gas at STP

5 l N2 gas at STP

0.5 g of H2 gas

10 g of O2 gas

13.

Use molecular orbital theory to explain why the $Be_2$ molecule does not exist.

14.

Although both $CO_2$ and $H_2O$ are triatomic molecules, the shape of $H_2O$ molecule is bent while that of $CO_2$ is linear. Explain this on the basis of dipole moment.

15.

What is the total number of sigma and pi bonds in the following molecules? (b) $C_2H_4$

16.

Discuss the shape of the following molecules using the VSEPR model: $BeCl_2$, $BCl_3$, $SiCl_4$, $AsF_5$, $H_2S$, $PH_3$

17.

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions : (c) Al and N.

18.

Define octet rule. Write its significance and limitations.

19.

Which out of $NH_3$ and $NF_3$ has higher dipole moment and why ?

20.

HYBRIDIZATION OF H2SO4 IS

SP2

SP3

SP3D

SP3D2

Worksheet Answers

Option D

Option B

11.

Option C

12.

Option A

20.

Option B

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