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Lewis Dot Structures

Last updated about 5 years ago
34 questions
Please draw Lewis dot structures and assign formal charges for the compounds below.

The video is an overview of how to draw Lewis dot diagrams, if you need it.
Draw a lewis dot structures for the following compounds. Please assign formal charges and record them in the short answer boxes below. Please include the sign (+ or -) before the number, followed immediately by the charge number (no spaces). For example: +3 instead of + 3 or 3+.
5

CO₂

2

Formal charge on C in CO2

2

Formal charge on O in CO2

5

NF₃

2

Formal charge on N in NF3

2

Formal charge on F in NF3

5

O₃

2

Formal charge on the left O in O3

2

Formal charge on the middle O in O3

2

Formal charge on the right O in O3

5

NH₄ ⁺

2

Formal charge on the N in NH4+

2

Formal charge on the H in NH4+

5

NO3 -

2

Formal charge on the N in NO3-

2

Formal charge on two of the O's in NO3-

2

Formal charge on one of the O's in NO3-

5

CH4

2

Formal charge on the C in CH4

2

Formal charge on the H in CH4

5

PCl4+

2

Formal charge on the P in PCl4+

2

Formal charge on the Cl in PCl4+

5

O2 (There is no central atom for this one, make sure octets for both are full!)

2

Formal charge on the O in O2

5

N2 (There is no central atom for this one, make sure octets for both are full!)

2

Formal charge on the N in N2

5

BCl3

2

Formal charge on the B in BCl3

2

Formal charge on the Cl in BCl3

5

SCl6

2

Formal charge on the S in SCl6

2

Formal charge on the Cl in SCl6

1

Why is formal charge useful?