Au-179 has 79 protons. This can be found by looking at a periodic table.
The 179 means that the neutrons + protons = 197
We know that it has 79 protons, that means that neutrons must be equal to 197 - 79 = 118 neutrons
Since this is a neutral atom, that means that the number of electrons is equal to the number of protons. Au-197 will have 79 electrons.
It has 79 protons, 118 neutrons, and 79 electrons.
