|The following electron-dot formulas for carbon dioxide both satisfy the octet rule for all of the atoms. Which of these structures is the better structure and why is this the case?|
|(a)||“A” is the better structure because there is no formal charge on any of the atoms.|
|(b)||“A” is the better structure because all the bonds and non-bonding electron pairs are arranged in a symmetrical pattern.|
|(c)||“B” is the better structure because there are opposite formal charges on the two oxygen atoms which attract each other and give the molecule a lower energy.|
“B” is the better structure because the bond energies of a single bond and a triple bond are higher than the bond energies of two double bonds.
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