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What is a isotope ?

User Matty K
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An isotope is a form of a chemical element whose atomic nucleus contains a specific number of neutron s, in addition to the number of protons that uniquely defines the element.
User Hillmark
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Answer: each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons

Step-by-step explanation:

User LewisBenge
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