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How does the bond length vary in dicarbon species `C_(2),C_(2)^(-),C_(2)^(2-)` |
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Answer» The molecular orbital configurations and the respective bond orders of the species are : `C_(2) : [sigma_(1s)]^(2)[sigma_(1s)^(**)]^(2) [sigma_(2s)]^(2)[sigma_(2s)^(**)]^(2)[pi_(2py)]^(2)[pi_(2py)]^(2)" "B.O.=1//2[8-4]=2` `C_(2)^(-) : [sigma_(1s)]^(2)[sigma_(1s)^(**)]^(2) [sigma_(2s)]^(2)[sigma_(2s)^(**)]^(2)[pi_(2py)]^(2)[pi_(2py)]^(2)[sigma_(2pz)]^(1)" "B.O.=1//2[9-4]=2.5` `C_(2)^(2-) : [sigma_(1s)]^(2)[sigma_(1s)^(**)]^(2) [sigma_(2s)]^(2)[sigma_(2s)^(**)]^(2)[pi_(2py)]^(2)[pi_(2py)]^(2)[sigma_(2pz)]^(2)" "B.O.=1//2[10-4]=3.0.` Since the bond length si inversely proportional to the bond order , the increasing order of bond lengyh is : `C_(2)^(2-) lt C_(2)^(-) lt C_(2)` |
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