Chemistry (Vol 1)>Chapter 4 - Chemical Bonding and Molecular Structure>EXERCISES>Q 4.2

EASY

11th Karnataka Board

IMPORTANT

Earn 100

The skeletal structure of ${C H}_{3} C O O H$ , as shown below is correct, but some of the bonds are shown incorrectly. Write the correct Lewis structure for acetic acid.

Important Questions on Chemical Bonding and Molecular Structure

HARD

11th Karnataka Board

IMPORTANT

Chemistry (Vol 1)>Chapter 4 - Chemical Bonding and Molecular Structure>EXERCISES>Q 4.21

Apart from tetrahedral geometry, another possible geometry for

{C H}_{4}

is square planar with the four

H

atoms at the corners of the square and the

C

atom at its centre. Explain why

{C H}_{4}

is not square planar ?

MEDIUM

11th Karnataka Board

IMPORTANT

Chemistry (Vol 1)>Chapter 4 - Chemical Bonding and Molecular Structure>EXERCISES>Q 4.22

Explain why

{B e H}_{2}

molecule has a zero-dipole moment although the

Be - H

bonds are polar.

MEDIUM

11th Karnataka Board

IMPORTANT

Chemistry (Vol 1)>Chapter 4 - Chemical Bonding and Molecular Structure>EXERCISES>Q 4.23

Which out of

{N H}_{3}

and

{N F}_{3}

has a higher dipole moment and why?

MEDIUM

11th Karnataka Board

IMPORTANT

Chemistry (Vol 1)>Chapter 4 - Chemical Bonding and Molecular Structure>EXERCISES>Q 4.24

What is meant by hybridisation of atomic orbitals? Describe the shapes of

sp, {sp}^{2}, {sp}^{3}

hybrid orbitals.

MEDIUM

11th Karnataka Board

IMPORTANT

Chemistry (Vol 1)>Chapter 4 - Chemical Bonding and Molecular Structure>EXERCISES>Q 4.25

Describe the change in hybridisation (if any) of the

A l

atom in the following reaction.

AlC l_{3} + C l^{-} \to AlC l_{4}^{-}

MEDIUM

11th Karnataka Board

IMPORTANT

Chemistry (Vol 1)>Chapter 4 - Chemical Bonding and Molecular Structure>EXERCISES>Q 4.26

Is there any change in the hybridisation of

B

and

N

atoms as a result of the following reaction?

B F_{3} + N H_{3} \to F_{3} B . N H_{3}

MEDIUM

11th Karnataka Board

IMPORTANT

Chemistry (Vol 1)>Chapter 4 - Chemical Bonding and Molecular Structure>EXERCISES>Q 4.27

Draw diagrams showing the formation of a double bond and a triple bond between carbon atoms in

C_{2} H_{4}

and

C_{2} H_{2}

molecules.

EASY

11th Karnataka Board

IMPORTANT

Chemistry (Vol 1)>Chapter 4 - Chemical Bonding and Molecular Structure>EXERCISES>Q 4.28

What is the total number of sigma and pi bonds in the following molecule?

$C_{2} H_{2}$