### 1D.9 nodes

Posted:

**Sun Oct 28, 2018 6:16 pm**1D.9 asks for the number of radial nodes and angular nodal surfaces. What is the difference between these two and aren't they the same number?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=21&t=35043

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Posted: **Sun Oct 28, 2018 6:16 pm**

1D.9 asks for the number of radial nodes and angular nodal surfaces. What is the difference between these two and aren't they the same number?

Posted: **Sun Oct 28, 2018 6:36 pm**

Angular nodes are planar areas where there is 0 probability of finding electrons, kind of like a flat sheet. Radial nodes are spherical shells where there is 0 probability of finding electrons, like a peel.

The second quantum number ℓ gives the number of angular nodes. The number of radial nodes is given by n - ℓ - 1.

Much Joy,

Atul

The second quantum number ℓ gives the number of angular nodes. The number of radial nodes is given by n - ℓ - 1.

Much Joy,

Atul