H C N

Formal Charges

Total FC = 0

Assign 7 electronsN atom has 5 in outer shellFormal charge = 2-

Assign 2 electronsC atom has 4 in outer shellFormal charge = 2+

Assign 1 electronsH atom has 1 in outer shellFormal charge = 0

0

2+

2-

H C N

Do atoms have octet

(or H a duet)?

Yes (octet)Yes (duet)

No (just 4)

Formal Charges

Total FC = 0Assign 6 electronsN atom has 5 in outer shellFormal charge = 1-

Assign 3 electronsC atom has 4 in outer shellFormal charge = 1+

Assign 1 electronsH atom has 1 in outer shellFormal charge = 0

0

1+

1-

Do atoms have octet

(or H a duet)?

Yes (octet)Yes (duet)

No (just 6)

H C N

H C N

Formal Charges

Total FC = 0Assign 5 electronsN atom has 5 in outer shellFormal charge = 0

Assign 4 electronsC atom has 4 in outer shellFormal charge = 0

Assign 1 electronsH atom has 1 in outer shellFormal charge = 0

00 0

Do atoms have octet

(or H a duet)?

Yes (octet)Yes (duet)

Yes

H C N

H C N