Questions and Answers

What is a vacuum? Is it matter?

Previous Question

(What is a vacuum? Is it matter?)

Questions and Answers Main Index

Next Question

(Will scientists ever
find smaller elements?)

Will scientists ever<br>find smaller elements?

Why is hydrogen's atomic number 1?

The atomic number is equal to the number of protons in an atom's nucleus. Hydrogen's atomic number is 1 because all hydrogen atoms contain exactly one proton.

Author:

Steve Gagnon, Science Education Specialist (Other answers by Steve Gagnon)

Related Pages: