What is the atomic number of an element defined as?

1 Answer
anor277
Feb 16, 2017

#"The atomic number, Z........"#

Explanation:

#"The atomic number, Z,"# is the number of protons, massive, positively charged, present in the nucleus. #Z# defines the identity of the element: #Z=1,"hydrogen";Z=2,"helium";Z=3,"lithium";#
#.................Z=23, "vanadium"#.

From where am I getting these numbers? Do you have to learn them?

Related questions
See all questions in Atomic Number
Impact of this question
2955 views around the world
You can reuse this answer
Creative Commons License