We again fill the orbitals according to Hund’s rule and the Pauli principle, beginning with the orbital that is lowest in energy. Atomic valence electrons (shown in boxes on the left and right) fill the lower-energy molecular orbitals before the higher ones, just as is the case for atomic orbitals. To obtain the molecular orbital energy-level diagram for O 2, we need to place 12 valence electrons (6 from each O atom) in the energy-level diagram shown in part (b) in Figure 6.5.9. The hybridization of two atomic orbitals results in the formation of molecular orbitals. The middle of the diagram is just the molecular orbital energy diagram. This diagram shows that when energy is added to the molecule of hydrogen it separates into two atoms of hydrogen.c. After energy is added one electron is sent to the sigma antibonding molecular orbital. Excite an electron of H2 and draw the diagram. In a sigma star (σ*) orbital An antibonding molecular orbital in which there is a region of zero electron probability (a nodal plane) perpendicular to the internuclear axis. This scheme of bonding and antibonding orbitals is usually depicted by a molecular orbital diagram such as the one shown here for the dihydrogen ion H 2 +. Use molecular orbital theory to predict the net bond order after N2 interacts with a photon that results in the promotion of an electron from bonding to an anti-bonding orbital. What we see here is a molecular orbital interaction diagram. Draw the molecular orbital diagram for H2 molecule.
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