Chemical Bonding and Molecular Structure

Sum of bond order of CO and NO+ is .

Answer

6

Solution

CO: 6 + 8 = 14 e⁻; NO+: 7 + 8 − 1 = 14 e⁻ ⇒ both isoelectronic with N2

MO: 1s2 *1s2 2s2 *2s2 ( 2px2 = 2py2) 2pz2

Bond order = 12(Nb - Na) = 12(10 - 4) = 3 for each (C O, N O+)

∴ Sum = 3 + 3 = 6

Answer: 6