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Q. The bond order of CO molecule is

Chemical Bonding and Molecular Structure

Solution:

$CO ( 6 + 8 = 14) =\sigma 1s^2, \sigma^* 1s^2, \sigma2s^2, \sigma^* 2s^2,\pi 2p^2_x \approx \sigma 2p^2_z$ $\, \, \, \, \, \, \, \, \, \, \, \, B.O.=\frac{N_b-N_a}{2}=\frac{10-4}{2}=3$