The element that has 0 neutrons is hydrogen.
The Simplest Atom: Hydrogen
As stated in the provided reference, the hydrogen atom is unique in its simplicity. It consists of:
- 1 proton
- 1 electron
- 0 neutrons
This makes hydrogen the only element that does not contain any neutrons in its most common isotope.
Isotopes of Hydrogen
While the most common isotope of hydrogen (protium) has zero neutrons, other isotopes exist. Deuterium has one neutron, and tritium has two neutrons. However, when we refer to "hydrogen" generally, we often mean protium, the most abundant form.
