Question

The number of anti-bonding electron pairs in o2- molecular ion on the basis of molecular orbital theory is (atomic no. of is8) :
options are: a)5 b)2 c)3 d)6

Answer 1

Answer:

$\bold {7}$

Explanation:

After oxygen, molecular orbital diagram becomes symmetrical due to pairing of electrons in the p-orbital which cause inter-electronic repulsion by which σ 2p(z) jump over π2p(x) and π2p(y). Hence, molecular orbital diagram becomes symmetrical!

The number of bonding e- pairs in O²- : 10

The number of anti-bonding e- pairs in O²- : $\bold{ 7 }$

• Now , ½ [ N(b) - N(a) ]

• ½ [ 10-7 ]

• ½ [3]

• 1.5

•||The above attachment is having M.O.D of O2||•

Hope it helps!

@charlie16

Answer 2

Explanation:

1.5 but here 2 which us not accu