Respuesta :

Answer:

In a given element, the number of neutrons can be different from each other, while the number of protons is not. These different versions of the same element are called isotopes. Isotopes are atoms with the same number of protons but that have a different number of neutrons.

Explanation:

Answer:

C

Explanation:

Consulting the definition of an isotop we find that it requires the same element to obtain a different valence (?!) by accepting or donating electrons(?!)