Question

of most common isotope table will be an average of all isotopes) 79 au gold 179 # protons # electrons

Explanation:

Step1: Recall atomic number property

The atomic number is equal to the number of protons. For gold (Au) with atomic number 79, the number of protons is 79.

Step2: Recall neutral - atom electron - proton relationship

In a neutral atom, the number of electrons is equal to the number of protons. Since gold is neutral here, the number of electrons is also 79.

Answer:

protons: 79

electrons: 79