What is atomic number of gold?

1 Answer
Mar 18, 2016

Answer:

For #Au#, #Z=79#

Explanation:

What does this mean? It means that in the gold nucleus there are 79 protons, 79 positively charged, massive particles. If there were a different number then the element would NOT be gold, because the atomic number defines elemental indentity: #Z=1#, #H#; #Z=2#, #He#; ..........#Z=78#, #Pt#, #Z=79#, #Au#