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Definition for isotope. (Science).

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Answer:

Check explanation below!

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Concepts

Isotopes are atoms with a different amount of neutrons. Atoms will ALWAYS have a set number of protons. On the periodic table, you may notice that the atomic mass is a decimal. This is mainly because neutrons often mass different amounts, so scientists calculate the average mass of it to find the atomic mass of the atom. Isotopes are still the same atom; they just have unique amount of neutrons.

User India
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Answer:

One or more number of species which have same number of atomic number but different mass number called isotopes

Step-by-step explanation:

User Zorawar
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