.What does the atomic number of an element indicate?

1 Answer
Sep 4, 2016

Answer:

The identity of the element.

Explanation:

The atomic number, #Z#, is the number of protons, massive, positively charged nuclear particles. The number #Z# determines the indentity of the element.

#Z=1#, the element in #H#, #Z=2#, the element in #He#,
#Z=3#, the element in #Li#,........#Z=6#, the element in #C#,
#Z=19#, the element in #K#,......#Z=26#, the element in #Fe#.....

You should not have to remember these, because in every test of chemistry and physics you ever sit, you should be issued a copy of the Perodic Table.