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Which of the following is the best definition of an isotope?

Aelements of the same kind with different numbers of neutrons
Belements of the same kind that have lost electrons
Celements of the same kind that have different electrical charges

...?

Verified Answer :

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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Answer:

A. elements of the same kind with different numbers of neutrons

Explanation:

As we know that an atom is represented by

\(_z^AX\)

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

\(_z^{A_1}X, _z^{A_2}X\)

so above is the example of isotopes

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