Question

Lewis Diagrams -- Formal Charges

What is the formal charge on the C atom in the correct or best Lewis structure for CN^-?  +7 +6 +5 +4 +3 +2 +1 0 -1 -2 -3 -4 -5 -6 -7  
1pts

Tries 0/3

How many lone pairs are in the best Lewis structure of SCN^-?  
1pts

Tries 0/5

What is the total number of valence electrons in the Lewis structure of SCN^-?  
1pts

Answer 1

1) CN Lewis structure of CN Valence elctrons of carbon is C = 4 Valence elctrons of nitrogen is N = 5 -N - means one electron add = 1 45110 N :c::: - Non bonding - Bonding electrons electrons Formal charge = Valance electrons on atom 1) 2 -N Formal charge of carbon = 4 - 2-6/2 2 - 3 =- 1 Formal charge of carbon = - 1 Lewis structure of SCN 2) Total valence elctrons of thiocynate ion = 16 Valence elctrons of carbon is C = 4 Valence elctrons of sulfur is S = 6 Valence elctrons of nitrogen is N 5 - means one electron add = 1 6 +451= 16 Lone pairs of thiocynate ion( SCN-) 6 Total number of valence electrons in the Lewis structure of SCN- 16 3) Valence elctrons of carbon is C = 4 Valence elctrons of sulfur is S 6 Valence elctrons of nitrogen is N = 5 - means one electron add = 1 6 +451= 16