Chapter Name : Chemical Bonding And Molecular Structure |
Sub Topic Code : 102_11_04_08_05 |
Topic Name : Molecular Orbital Theory |
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Sub Topic Name : Energy Level Diagram For Molecular Orbitals |
• Molecular orbitals of diatomic molecules are of 3 types: 1. Sigma, 2. Pi and 3. Delta • Sigma bonding and antibonding molecular orbitals are symmetric along the bonding molecular plane while pi molecular orbitals are not. • The 2s and 2p atomic orbitals (eight atomic orbitals on two atoms) give rise to the eight molecular orbitals.
Covalent bond, polyatomic molecule , atomic and molecular orbital
Many things in nature are symmetrical e.g. insects, leaves.
Why are things having symmetry?
Key Words | Definitions (pref. in our own words) |
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Molecular orbital | Orbitals formed when atomic orbitals combine by hybridisation. |
Gadgets | How it can be used |
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Square piece of paper, circular piece of paper, | Fold the papers and see whether they are symmetrical or not. |
Symmetry helps to group things.
Zoo, garden.
Examples | Explainations |
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Leaves, insects | Notice the symmetry in the structure of things for ex: leaves and insects about a single plain or more than one plain. |
Molecular orbitals are of three types: sigma, pi and delta. The energy levels of molecular orbitals have been determined experimentally from spectroscopic data for homonuclear diatomic molecules of second row elements of the periodic table.
Similar energies are important for atomic orbitals to combine.
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