Question

which has no neutron in its nucleus​

Answer 1

Answer:

"Protium"

has no neutron in its nucleus.

Hope it helps you.

Answer 2

Answer:

❃Protium.

➠There is only one stable atom that does not have neutrons. It is an isotope of the element hydrogen called protium. Protium, which contains a single proton and a single electron, is the simplest atom. All other stable atoms contain some number of neutrons.

☑☄