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Assoli18 [71]
4 years ago
9

What does the number next to isotopes signify?

Chemistry
2 answers:
elixir [45]4 years ago
3 0
It is an approximation of its mass number. Each isotope of an element has a different mass number.
erma4kov [3.2K]4 years ago
3 0
<span>The number next to the isotope is the mass number- They all have different masses because they have different numbers of neutrons, but the same amount of protons (Remember protons + neutrons = mass)</span>
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