That's a great question! There's no single answer to "how many subatomic particles are in gold" because it depends on which isotope of gold we're talking about.

Here's why:

* Isotopes: Gold (Au) has several isotopes, which are atoms of the same element with the same number of protons but different numbers of neutrons. The most common isotope is gold-197 (¹⁹⁷Au).

* Subatomic Particles: The three main subatomic particles are protons, neutrons, and electrons.

* Protons: Determine the element (gold has 79 protons).

* Neutrons: Vary between isotopes. Gold-197 has 118 neutrons (197 - 79 = 118).

* Electrons: Normally equal to the number of protons, so gold has 79 electrons.

Therefore, for the most common isotope, gold-197:

* Total subatomic particles: 79 (protons) + 118 (neutrons) + 79 (electrons) = 276 subatomic particles

However, remember that this is just for gold-197. Other isotopes of gold will have a different number of neutrons and therefore a different total number of subatomic particles.