Answer:
The formal charges of sulfur (S), carbon (C) and nitrogen (N) atoms in SCN⁻ are (-1), 0 and 0, respectively.
Explanation:
At first, let us consider the formula to calculate formal charge as follows:
Formal Charge = Valence electrons - Unbonded electrons - [tex]\frac{1}{2}[/tex]Bonded electrons
According to the structure of [S-C≡N]⁻,
The formal charges of S, C and N are as follows:
S = 6 - 6 - [tex]\frac{2}{2}[/tex] = -1
C = 4 - 0 - [tex]\frac{8}{2}[/tex] = 0
N = 5 - 2 - [tex]\frac{6}{2}[/tex] = 0
So, the formal charges of sulfur (S), carbon (C) and nitrogen (N) atoms in SCN⁻ are (-1), 0 and 0, respectively.
