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What is the atomic number of hydrogen?In: Periodic Table |
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The atomic number of hydrogen (H) is 1
The atomic weight of H is 1.00794 grams per mole.
Hydrogen gas exists as a diatomic molecule: H2.
See the Web Links to the left of this answer for a periodic table with more information about this element!
The atomic number of an element = the number of protons in the nucleus.
The atomic number is written lower left of the chemical symbol for the element:
1H
First answer by Tigerwhit. Last edit by Ligand. Contributor trust: 40 [recommend contributor]. Question popularity: 46 [recommend question]





