Question

A proton has a charge of +1, while an electron has a charge of -1.

The charge of an atom at rest is zero. The element gold has 79 protons. How
many electrons does it have?

Answer 1

79 electrons

Explanation:

If it has 79 protons it will have a total proton charge of 79 so tho make the charge zero we need to add (79) electrons .Mathematically (1*79)+(-1*79)=0