Free Printable LEWIS STRUCTURE

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LEWIS STRUCTURE

Total questions: 22

Worksheet time: 6hrs 30mins

Name

Class

Date

This is a correct dot diagram for oxygen (O)

true

false

This is a correct Lewis dot diagram for fluorine (F)

true

false

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

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

When writing Lewis Structures, only __________ electrons are used.

Inner shell

Core

Valence

Stable

What is the correct Lewis Structure for ammonia NH3

Which is the correct molecular structure for carbon dioxide?

In the correct Lewis structure for CH_4,how many unshared electron pairs surround the carbon?

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

10.

Each line in a Lewis Structure represents __________ electron(s).

11.

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

structure A

structure B

structure C

structure D

12.

3. Which is a correct Lewis structure for hydrogen cyanide, HCN?

13.

4. Which of the following contains an atom (other than hydrogen) which lacks an octet of valence electrons?

NH₃

H₃O⁺

BH₃

NH₄⁺

14.

5. Which one of the following violates the octet rule?

PCl₃

CBr₄

NF₃

AsF₅

15.

Three pairs of electrons are shared in a

Single bond

Double bond

Triple bond

16.

What is the correct structure for BF₃?

Option A.

Option B.

Option C.

Option D.

17.

Atoms of H only form _________ bonds.

Double

Single

Multiple

Triple

18.

The following species are exception to octet rule EXCEPT

$I_3^{\ -}$

$NH_4^{\ +}$

$XeF_4$

$SF_4$

19.

What is the central atom in nitrate ion (NO₃^- )

none

20.

How would you draw a Lewis dot diagram for Magnesium?

21.

What is the correct formula for this molecule?

Si₄F

SiF₄

SiF

Si₄F₄

22.

Why is this Lewis Structure incorrect? Choose all that apply.

There are too many bonds around Si.

There should only be single bonds in this Lewis Structure.

The Structure is missing a triple bond.

Chlorine only has 6 electrons surrounding it.

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LEWIS STRUCTURE

Total questions: 22

Worksheet time: 6hrs 30mins

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