Simulation · Chemistry · Class 11
Fill a molecular orbital diagram
From the lesson Homonuclear diatomic molecules in Chemical Bonding and Molecular Structure. Change the values and watch what happens.
Fill a molecular orbital diagramChemistry · Class 11
The idea behind it
NCERT § "Bonding in Some Homonuclear Diatomic Molecules"
- H₂: bond order 1, diamagnetic. He₂: bond order 0, so it is not stable.
- Li₂: bond order 1, diamagnetic. B₂: bond order 1, paramagnetic because its two π2p electrons are unpaired.
- C₂: bond order 2, diamagnetic, and both bonds are π bonds in the MO picture.
- N₂: bond order 3, diamagnetic, with a very high bond enthalpy.
- O₂: bond order 2 with two unpaired electrons in the π* orbitals, so it is paramagnetic, which the Lewis structure cannot explain.
- Removing an antibonding electron raises bond order: O₂⁺ has 2.5; adding electrons lowers it: O₂⁻ has 1.5 and O₂²⁻ has 1.
- F₂: bond order 1, diamagnetic. Ne₂: bond order 0, not formed.