[EH86055]

Hello everyone,
If an isotope of an element loses an electron, is it both an ion and an isotope or just an ion? My science teacher said that I wouldn't be able to refer to it as an isotope anymore, so I'm confused.
Thanks in advance.

[Orcio_87]

If an isotope of an element loses an electron, is it both an ion and an isotope or just an ion?

Both isotope and ion. Loss of electron does not change its number of neutrons.