Respuesta :
Isotopes are forms of an element, that each has a different number of neutrons. The answer to your question is C. They each have a different number of neutrons in their nuclei. I hope that this is the answer that you were looking for and it has helped you.
Answer:
Option C, They each have a different number of neutrons in their nuclei.
Explanation:
Isotopes of an element have different number of neutron but they have same number of proton.
For example -
There are two isotopes of carbon i.e carbon-12 and carbon-14
The number of protons in both carbon-12 and carbon-14 is equal to 6
while the number of neutron in carbon-12 is 6 while the number of neutron in carbon-14 is 8
Hence, option C is correct