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Quiz: The Valence Bond Theory & Bond Strength

Total questions: 10

Worksheet time: 22mins

Name
Class
Date
1.

The sigma bonds formed in SF₆ involve the overlap of orbitals between

a)

sp3 and s orbitals

b)

sp3d2 and p orbitals

c)

sp3d and p orbitals

d)

sp2 and d orbitals

2.

Which of the following statements regarding pi bonds is correct?

a)

Two unhybridized orbitals are overlap sideways and perpendicular to the axis.

b)

The electrons density in pi bond is concentrated in the region between the nuclei.

c)

It is stronger than sigma bonds

d)

Hybridized and unhybridized orbitals are overlap side by side

3.

Choose the central atom in the molecule below that does not undergo sp3 hybridization.

a)

H2O

b)

CH4

c)

NH3

d)

ClF3

4.

What are the types of hybridization for the carbon and nitrogen atoms in the aniline molecule?

a)

C sp3 and N sp3

b)

C sp and N sp2

c)

C sp2 and N sp3

d)

C sp2 and N sp2

5.

Why can xenon (Xe) form bonds with fluorine to create the compounds XeF₂ and XeF₄?

a)

Empty d orbitals is available

b)

High nuclear charge of Xe atom

c)

The electrons in p-orbital promoted to d-orbitals

d)

The Xe atom has lower electronegativity

6.

The molecular shape of ZF3 molecule is shown below


The hybrid orbitals in ZF3 is

a)

sp3

b)

sp2

c)

sp3d

d)

sp3d2

7.

A molecule contains only carbon and hydrogen. In the structure, the molecule has two sp carbons and three sp³ carbons. Determine the structural formula of the molecule.

a)

b)

c)

d)

8.

The purpose of promoting one or more electrons in the process of forming hybrid orbitals is ___________________

a)

to increase the number of orbital

b)

to increase the number of unpaired electrons

c)

to use the empty d-orbitals

d)

to make orbital have same the shape and energy

9.

Choose the following compounds that has the largest number of pi bonds.

a)

H2CO

b)

CO2

c)

HCN

d)

SO3

10.

How many sp3d2 orbitals can be produced from hybridization and what is the electron geometry?

a)

five orbitals, trigonal bipyramidal

b)

three orbitals, trigonal planar

c)

four orbitals, tetrahedral

d)

six orbitals, octahedral