Question

Two pi and half sigma bonds are present in ______.

Options

• `"O"_2^+`

• N₂

• O₂

• `"N"_2^+`

Answer 1

Two pi and half sigma bonds are present in `bbunderline("N"_2^+)`.

Explanation:

\[\ce{N^+_2}\] = 13e⁻ = \[\ce{σ 1s^2σ^* 1s^2σ 2s^2σ^* 2s^2 π 2p^2_{{x}} = π 2p^2_{{y}}σ 2p^1_{{z}}}\]

B.O. = `("Bonding electrons" - "Antibonding electrons")/2`

B.O. = `(9 - 4)/2`

= 2.5

= 2π bond + 0.5 σ bond