CHM120H5 Lecture Notes - Lecture 9: Principal Quantum Number, Organic Chemistry, Azimuthal Quantum Number
At. Structure, vsepr, bonding
Orbital Nodes
Node - region in space with zero probability of finding an
electron.
Result of destructive interference
Two types of nodes:
Angular (planar or conical)
Radial (spherical)
The fact that the phase of electron orbitals can be positive
or negative is hugely significant for chemistry.
When orbitals interact, those with like sign phases interfere
constructively. Those with unalike signs interfere
destructively.
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Document Summary
Node - region in space with zero probability of finding an electron. The fact that the phase of electron orbitals can be positive or negative is hugely significant for chemistry. When orbitals interact, those with like sign phases interfere constructively. An example of this is orbital hybridization. It is the area around the nucleus where there is. To determine radial nodes, you use the equation (n - l - 1) So for 3s, s has an l value of 0, so the number of radial nodes would be (3 (for the principle quantum number) - 0 (azimuthal quantum number) - 1) = 2 radial nodes. For 3p, it would be (3 - 1 - 1) = 1 radial node. Orbital hybridization: is fundamental to understanding organic chemistry. When an s orbital and a p orbital hybridize, the orbital phases are crucial.
