Free Printable Covalent Compounds and Molecular Geometry

Free Printable Worksheets

Worksheets

Covalent Compounds and Molecular Geometry

Total questions: 25

Worksheet time: 19mins

Name

Class

Date

1.

Which is the correct molecular structure for carbon dioxide (CO₂)?

a)

b)

c)

d)

2.

What is the correct Lewis Dot Structure for ammonia NH₃?

a)

b)

c)

d)

3.

According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?

a)

Pairs of valence electrons

b)

Inner shell electrons

c)

Mobile Electrons

d)

Electrons closest to the nucleus

4.

According to the octet rule most elements need _______ valence electrons.

a)

2

b)

8

c)

6

d)

18

5.

Hydrogen needs _____ electrons in its valence shell to be stable.

a)

4

b)

6

c)

8

d)

2

6.

Metals and nonmetals form which kind of bond?

a)

Polar covalent

b)

Ionic

c)

Non-polar covalent

d)

Metallic

7.

How strongly an atom attracts electrons towards itself in a bond is called...

a)

Ionization energy

b)

Electronegativity

c)

Electricity

d)

Nuclear force

8.

What way does a dipole arrow point in a polar bond?

a)

Towards the MORE electronegative element.

b)

Towards the LESS electronegative element.

9.

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

a)

A

b)

B

c)

C

d)

D

10.

How many valence electrons are in Phosphorus?

a)

15

b)

4

c)

5

d)

31

11.

Choose the correct shape for this molecule:

a)

Trigonal planar

b)

Trigonal pyramidal

c)

Trigonal planar - Bent

d)

Tetrahedral

12.

What is the molecular shape of H₂S?

a)

linear

b)

trigonal planar

c)

tetrahedral - bent

d)

tetrahedral

13.

Which of the following molecules is ASYMMETRICAL?

a)

b)

c)

d)

14.

Which statement correctly describes NaCl?

a)

Its charge is evenly distributed

b)

It is a polar molecule

c)

It is ionic, and its charges are distributed unevenly

15.

Which of the following molecules, based on the elements present, would be MOST polar?

a)

HF

b)

H₂

c)

HCl

d)

HBr

16.

Is this molecule symmetrical or asymmetrical?

a)

Asymmetrical

b)

Symmetrical

17.

Is this molecule symmetrical or asymmetrical?

a)

Asymmetrical

b)

Symmetrical

18.

What geometry will this molecular structure have?: CBr₄

a)

tetrahedral - bent

b)

tetrahedral

c)

linear

d)

trigonal pyramidal

19.

Which of the following is the correct Lewis structure for the compound PBr₃?

a)

structure A

b)

structure B

c)

structure C

d)

structure D

20.

If the calculated ΔEN for a bond is 0.35 the bond would be...

a)

Ionic

b)

Polar covalent

c)

Non polar covalent

21.

If the calculated ΔEN for a bond is 2.5 the bond would be...

a)

Ionic

b)

Polar covalent

c)

Non polar covalent

22.

If the calculated ΔEN for a bond is 0.81 the bond would be...

a)

Ionic

b)

Polar covalent

c)

Non polar covalent

23.

How many NON BONDING electron domains are around the central atom?

a)

0

b)

2

c)

3

d)

4

24.

What molecule below could be polar if it has polar bonds? Think about the symmetry of the molecule.

a)

b)

c)

d)

25.

What is the molecular geometry of SO₂? Note: count the electron domains on S.

a)

Linear

b)

Trigonal Planar - Bent

c)

Tetrahedral - Bent

d)

Trigonal Pyramidal

100 %

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