InterviewSolution
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InterviewSolution
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`CO_(2)` is a linear, monomeric covalent compound. Its real structure is a resonance hybrid of _____resonance structures.A. twoB. fourC. threeD. it does not exhibit resonance |
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Answer» Correct Answer - C `CO_(2)` molecule is mostly described as `:overset(..)(O)=C=overset(..)(O):` This structure predicts that `CO_(2)` is linear and both `C-O` bonds should have the same length `(122 p m)`. Experimentally, both `C-O` bonds are found to be `115` pm indicating some triple bond character. This can be justified if `CO_(2)` is considered to be a resonance hybrid of three resonance forms: `overset(-):overset(..)underset(..)(O)-C-=O:^(+) harr :overset(..)(O)=C=overset(..)(O):harr:overset(+)(O)-=C-underset(..)overset(..)Ooverset(-):` In addition to `sigma` bonds between `C` and `O`, there is a three-center four-electron `pi` bond covering all three atoms. |
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