* Atomic Number (Z): 11, which indicates the number of protons in the nucleus.

* Mass Number (A): 24, which indicates the total number of protons and neutrons in the nucleus.

The notation is: ²⁴₁₁Na

Let's break it down:

* ²⁴: The superscript represents the mass number (A).

* ₁₁: The subscript represents the atomic number (Z).

* Na: The symbol for sodium.