Sigma antibonding molecular

For p orbitals, the process is more complex because they can interact with each other in two different ways. For example, two 2p orbitals can approach each other end-to-end to produce a sigma bonding and a sigma antibonding molecular orbital, as shown in Figure 10.24(a). Alternatively, the two p orbitals can... 

If the two atomic orbitals are s-orbitals then the resulting molecular orbitals are called o (sigma) bonding molecular orbitals and a (sigma star) antibonding molecular orbitals (Figure 1.5). 

Sigma (s) Orbital A molecular orbital which is symmetrical about a line joining the two nuclei (the bond axis) is called a sigma (s) orbital. It may be bonding or antibonding molecular orbital. 

Pi bonding and antibonding molecular orbitals. The sideways overlap of two p orbitals leads to a 77 bonding MO and a 77 antibonding MO. A pi bond is not as strong as most sigma bonds. 

Fig. 32 Formation of sigma bonding- and antibonding molecular orbitals from end-to-end...

Define the following terms bonding molecular orbital, antibonding molecular orbital, pi molecular orbital, sigma molecular orbital. 

---