We've done atomic number
Chemistry
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My apologies! It seems I repeated information. Let's move on to the next concept.
The next note is about Neutrons.
Neutrons are neutral particles found in the nucleus of an atom, along with protons. They have a mass very similar to that of protons.
The number of neutrons in an atom can vary for a given element. Atoms of the same element that have different numbers of neutrons are called isotopes.
The number of neutrons is calculated by subtracting the atomic number (number of protons) from the mass number:
Number of neutrons = Mass Number - Atomic Number
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