Question

An element which has no neutron in its nucleus.

a) hydrogen

b) helium

c) neon

d) zinc​

Answer 1

The nucleus of deuterium, called a deuteron, contains one proton and one neutron (mass number = 2), whereas the far more common hydrogen isotope, protium, has no neutrons in the nucleus.

hydrogen

Answer 2

Answers.Neon ................................

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