QAQ #4: Principal Azimuthal Number-Brief

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Question:

What is the principal azimuthal number?

Solution:

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The principal azimuthal quantum number, denoted by $l$, represents the shape of the orbital in an atom. It determines the subshell in which an electron is located and can have values from 0 to $n-1$, where $n$ is the principal quantum number.

Here are the values of $l$ and their corresponding subshells:

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- $l=0$ corresponds to an s orbital (sharp).

- $l=1$ corresponds to a p orbital (principal).

- $l=2$ corresponds to a d orbital (diffuse).

- $l=3$ corresponds to an f orbital (fundamental).

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For example, in the electron configuration of oxygen ($O$), the electron configuration is $1s^{2}2s^{2}2p^4$. In this configuration, the principal quantum number is $n=2$, and the azimuthal quantum number for the p orbital is $l=1$, indicating that the electrons in oxygen are in the 2p subshell.

QAQ #4: J K Online Classes

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