Question

(b) define isotopes.​

Answer 1

Answer:

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Isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties. Every chemical element has one or more isotopes.

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Answer 2

Answer:

one of two or more forms of a chemical element that have different physical characteristics but the same chemical characteristics.