for which of the following diatomic molecules does the bond order increase with

Question

for which of the following diatomic molecules does the bond order increase with the loss of two electrons forming the corresponding cation with a 2+ charge? a: B2 -> B2 (2+) + 2e- b: C2 -> C2 (2+) + 2e- c: N2 -> N2 (2+) + 2e- d: O2 -> O2 (2+) + 2e-

Explanation / Answer

d) O2 => O2(2+) + 2e- With O2 you have one extra antibonding orbital filled than O2(2+). 2Px antibonding 2e- 2Py bonding 2e- 2Pz bonding 2e- 2Px bonding 2e- 2S2 antibonding 2e- 2S2 bonding 2e- _____________________ (8 - 4)/2 = 2 When the Px antibonding orbital is empty in O2(2+) you have the following: (8 - 2)/2 = 3

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