Question

Can protons exist outside nucleus?

Answer 1

Answer:

"There is abundant evidence that within stable nuclei that neutron-neutron and proton-proton pairs exist, but there is no evidence of the existence of such pairs outside of nuclei. However free neutron-proton pairs do exist and are called deuterons, the nuclei of heavy hydrogen."

Answer 2

Answer:

There is abundant evidence that within stable nuclei that neutron-neutron and proton-proton pairs exist, but there is no evidence of the existence of such pairs outside of nuclei. However free neutron-proton pairs do exist and are called deuterons, the nuclei of heavy hydrogen.