Lewis Structural Formulas

How many dots should Ne have and how many times should it bond?

• 8 dots, 0 times

• 8 dots, 8 times

• 6 dots, 2 times

• 2 dots, 2 times

Tags

NGSS.HS-PS1-1

Why is C the correct version of C₂H₂?

• C needs to bond 4 times and H bonds once

• C needs to bond 3 times

• H should bond 2 times

• C looks better

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is wrong with the structural formula for C?

• Nothing

• H's are bonding the wrong number of times.

• C's and O's are bonding the wrong number of times

• Just O is bonding the wrong number of times.

Tags

NGSS.HS-PS1-2

Draw on your whiteboard or paper C₃H₂ON₂ which will have a C=O, a C=N, and a C-N triple bond. Draw both a structural formula and a Lewis Dot Structure.

• Ms. Mannion said I did it right!

• I am wonderful but I made a mistake

• I didn't even try. :(

Answer explanation

Tags

NGSS.HS-PS1-1

Which structural formula is a correct drawing of C₂H_2?

• A

• B

• C

• D

The electron dot diagram that correctly shows the bonding in H₂N₂ is:

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is used to model the formation of an ionic compound?

• A) Bohr diagrams

• B) Lewis dot diagrams

• C) Structural formulas

• D) Empirical formulas

Tags

NGSS.HS-PS1-3

Which of the following correctly represents the Lewis structure for water (H2O)?

Tags

NGSS.MS-PS1-1

What is the total number of valence electrons in the Lewis structure of carbon dioxide (CO2)?

• A) 12

• B) 16

• C) 18

• D) 20

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In the Lewis structure of ammonia (NH3), how many lone pairs are present on the nitrogen atom?

• A) 0

• B) 1

• C) 2

• D) 3