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The best and most correct answer among the choices provided by your question is the first choice or letter A.
Isotopes are elements of the same kind with different numbers of neutrons.
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Isotopes are elements of the same kind with different numbers of neutrons.
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
Answer:
A. elements of the same kind with different numbers of neutrons
Explanation:
As we know that an atom is represented by
[tex]_z^AX[/tex]
here we know that
z = atomic number
A = atomic number + number of neutrons
now if the number of neutrons in an atom is different but having same number atomic number then the combination of such group of atoms is known as isotopes.
So here we have
[tex]_z^{A_1}X, _z^{A_2}X[/tex]
so above is the example of isotopes
