In the carbon family, the elements other than carbon do not form p$\mathrm{\pi }$-p$\mathrm{\pi }$ bonds because the atomic orbitals are:

• A

  Small and diffuse to undergo effective lateral overlap.

• B

  Large and diffuse to undergo effective Lateral overlap.

• C

  Large and far too less diffuse to overlap linearly.

• D

  small to overlap both laterally and linearly.