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Q.
Which of the following shows the Lewis dot formula for $CO_{2}$?
Chemical Bonding and Molecular Structure
Solution:
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
