Question

Which of the following statement is incorrect ?

• A. During N+2 formation, one electron is removed from the bonding molecular orbital of N2.
• B. During O+2 formation, one electron is removed from the antibonding molecular orbital of O2.
• C. During O–2 formation, one electron is added to the bonding molecular orbital of O2.
• D. During CN– formation, one electron is added to the bonding molecular orbital of CN.

Answer 1

Answer: (C)

During O–2 formation, one electron is added to the bonding molecular orbital of O2.

Answer 2

(3) O2 : ($\sigma$1s)2 ($\sigma$ *1s)2 ($\sigma$2s)2 ($\sigma$ *2s)2 ($\sigma$2pz)2

($\pi$2p2x = $\pi$2p2y ) ($\pi$ *2px1 = $\pi$ *2p1y)

O2– : ($\sigma$1s)2 ($\sigma$ *1s)2 ($\sigma$2s)2 ($\sigma$ *2s)2 ($\sigma$2pz)2

($\pi$2p2x = $\pi$2p2y ) ($\pi$ *2px2 = $\pi$ *2p1y)