Examlex
The basic cell electrochemical reaction in fuel cells uses hydrogen gas as a fuel and breaks the hydrogen gas into hydrogen ions and electrons using a(n) _____________ on the anode.
Isotope
Variants of a particular chemical element that differ in neutron number, and consequently in nucleon number, but have the same number of protons.
Protons
Positively charged particles located in the nucleus of an atom, contributing to the atom's mass and charge.
Isotope
Atoms of the same element with the same number of protons but different numbers of neutrons, leading to different atomic masses.
Element
An element is a substance consisting of atoms which all have the same number of protons, classically considered the simplest substances that cannot be broken down using chemical reactions.
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