Chemistry - CHEMICAL BONDING Question with Solution | TestHub

(P) Orbitals are localised on only one atom and do not affect bonding.

(1) $\sigma$ (bonding)

(Q) Electrons in these molecular orbitals lower the energy of the molecule, and are delocalised between two nuclei in two lobes which are above and below the joining line of nucleus.

(2) ${\sigma }^{\ast }$ (antibonding)

(R) Electrons in these molecular orbitals raise the energy of the molecule, these orbitals have no nodal plane along the axis between the two adjacent nuclei.

(3) Non-bonding

(S) These molecular orbitals have lobes on opposite side of the joining line of nucleus and a nodal plane perpendicular to joining line of the nuclei.

(4) $\pi$ (bonding)

(5) ${\pi }^{\ast }$ (antibonding)