Question #8c246

1 Answer
Arnav
Dec 13, 2016

Atomic number, Z = 1.

Explanation:

The atomic number of an element is the number of protons one of its atom contains.
One neutral atom of Hydrogen contains one electron, one proton and 0,1,2 or 3 neutrons depending on which isotope it is.

Fact: Even though Hydrogen is so small, it constitutes 75% of the elemental mass of the whole universe!

Related questions
See all questions in Atomic Number
Impact of this question
1889 views around the world
You can reuse this answer
Creative Commons License