Question

Which of the following shows the Lewis dot formula for $CO_{2}$?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

Answer 2

Step I: Skeleton OCO Step II : $A =1 \times 4$ for $C +2 \times 6$ for $O =4+12=16$ electrons Step III : Total no. of electrons needed to achieve noble gas configuration $(N)$ $N=1 \times 8+2 \times 8=24$ Step IV: Shared electrons, S $= N - A =24-16=8$ electrons Step V: O :: C:: O