Adjective
antibonding (not comparable)
(chemistry, physics) Describing an atomic or molecular orbital whose energy increases as its constituent atoms are brought closer together - thus generating a repulsive force that hinders bonding.
Bonding can be described with three bonding electron pairs and two antibonding electrons, whose spins are aligned, such that the molecule has nonzero total angular momentum. Source: Internet
Another way of looking at it is that there are two bonding electrons and two antibonding electrons; therefore, the bond order is 0 and no bond exists (the molecule has one bound state supported by the Van der Waals potential). Source: Internet
A δ bonding orbital has two nodal planes containing the internuclear axis, and a δ* antibonding orbital also has a third nodal plane between the nuclei. Source: Internet
A σ* orbital, sigma antibonding orbital, also maintains the same phase when rotated about the internuclear axis. Source: Internet
H 2 Electron wavefunctions for the 1s orbital of a lone hydrogen atom (left and right) and the corresponding bonding (bottom) and antibonding (top) molecular orbitals of the H 2 molecule. Source: Internet
A π* orbital, pi antibonding orbital, will also produce a phase change when rotated about the internuclear axis. Source: Internet