Question

Draw the lewis structure (including resonance structures) for the acetate ion (ch3coo−). for each resonance structure, assign formal charges to all atoms that have formal charge.

Answer 1

Explanation:

Lewis structure : These are the electron dot structure which shows the bonding between the atoms of the molecule and lone pairs of electron(if present on an atom)

Resonance structures : These are the structure which shows the delocalizing of electrons in a molecule. When the molecule have more than one Lewis structure those structure are known as resonance structure.

Formal charge of ,$FC=V-(\frac{B}{2}+N)$

V= valence electron around an atom

B = number of bonding electrons

N = number of non bonding electrons

Formal charge of structure(I)

$FC_{C}=V-(\frac{B}{2}+N)=4-(\frac{8}{2}+0)=0$

$FC_{O^1}=V-(\frac{B}{2}+N)=6-(\frac{4}{2}+4)=0$

$FC_{O^2}=V-(\frac{B}{2}+N)=6-(\frac{2}{2}+6)=-1$

Formal charge of structure(II)

$FC_{C}=V-(\frac{B}{2}+N)=4-(\frac{8}{2}+0)=0$

$FC_{O^1}=V-(\frac{B}{2}+N)=6-(\frac{2}{2}+6)=-1$

$FC_{O^2}=V-(\frac{B}{2}+N)=6-(\frac{4}{2}+4)=0$