Question

How many of each subatomic particle does a stable Sodium (Na) atom have? (11 protons,11 neutrons, 12 electrons; 11 protons, 12 neutrons, 11 electron; 34 protons, 11 neutrons, 11 electrons; 23 protons, 12 neutrons, 23 electrons)

Answer 1

A stable sodium (Na) atom has 11 protons, 12 neutrons, and 11 electrons. This configuration corresponds to the most common isotope of sodium, which is Sodium-23 (Na-23).

Thus, the correct choice from your options is:
- 11 protons, 12 neutrons, 11 electrons.

The other combinations mentioned are incorrect for a stable sodium atom.