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Transcript

Lewis Structures

Check your structures indicated in the questions above.

How many hydrogens does oxygen need?

After thinking about the Lewis structures of the 3 elements with hydrogen and the diatomic molecules O2 and N2, click each box to reveal the correct structure and number of hydrogens. The last box is a challenge molecule!

How many hydrogens does nitrogen need?

N

How many hydrogens does carbon need?

C

What is the structure of 2 Oxygen atoms?

O2

What is the structure of 2 nitrogen atoms?

N2

What is the structure of CO2?

Oxygen needs 2 hydrogens!

Nitrogen needs 3 hydrogens!

Carbon needs 4 hydrogens!

Click here to reveal the structure!

Click here to reveal the structure!

Click here to reveal the structure!

O

CO2

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1

Oxygen has 6 valence electrons and needs to more to complete its octet.It will bond with 2 hydrogens!

Nitrogen has 5 valence electrons and needs 3 more to complete its octet.It will bond with 3 hydrogens to form the structure shown. This structure has 6 bonding electrons and 2 non-bonding electrons.

Carbon has 4 valence electrons and so it needs 4 electrons to complete its octet. It will bond with 4 hydrogens! In this case the structure has 8 bonding electrons and no non-bonding electrons.

Oxygen is a diatomic that includes a double bond! Double bonds account for 4 total electrons! This structure has 4 bonding electrons and 8 non-bonding electrons

N2 has a triple bond, that allows each nitrogen to have an octet This accounts for 6 bonding electrons. The structure also has 4 non-bonding electrons.

CO2 contains 2 double bonds! This is a total of 8 shared electrons! Each oxygen also has 4 non-bonding electrons.