In the Lewis dot structure of carbonate ion shown under the formal charges on the oxvgen atoms 1,2 and 3 are respectively

• A

  $-2,0,0$
• Correct answer
  B

  $-1,0,-1$
• C

  $0,-1,-1$
• D

  $-3,0,+1$

Solution

Solution

$\begin{aligned} & \mathrm{FC}(\text { oxygen } 1)=6-6-\frac{1}{2} \times 2=-1 \\ & \mathrm{FC}(\text { oxygen } 2)=6-4-\frac{1}{2} \times 4=6-6=0 \\ & \mathrm{FC}(\text { oxygen } 3)=6-6-\frac{1}{2} \times 2=-1\end{aligned}$

Hence, the correct answer is option: 'B'.