InterviewSolution
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InterviewSolution
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Which of the following is incorrect regarding carbon monoxide?A. The carbon-oxygen bond in `CO` is very short `(113 p m)`, about the length that would be expected for a triple bond.B. The triple bond between `C` and `O` in `CO` is the strongest bond known with a bond enthalpy of `1070 kJ mol^(-1)`.C. The dipole moment of `CO` is very high.D. According to molecular orbital theory, the bond order of `CO` molecule is `3`. |
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Answer» Correct Answer - C The dipole moment of `CO` is very low due to the back donation of a pair of electrons from the more electronegative `O` to the less electronegative `C` atom. The molecular orbital configuration of `CO` is `sigma 1s^(2), sigma^**1s^(2),sigma2s^(2).sigma^**2s^(2)`, `{(pi2p_(x)^(2),,,,,),(,,sigma^**2p_(z)^(0),,,),(pi2p_(y)^(2),,,,,):}{(pi^**2p_(x)^(0),,,,),(,,sigma^**2p_(z)^(0),,),(pi^**2p_(y)^(0),,,,,):}` Bond order `= (N_(b)-N_(a))/(2) = (10-4)/(2)=3` |
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