Question

element in period 3 with a neutron or Proton ratio around 1

Answer 1

hey the answer is ...

Magnesium..

Answer 2

The answer is sodium or Na as the lighest element in period 3 is sodium. Also, Neutron or proton ratio is around 1 but not exactly equal to 1. In Magnesium, the neutron or proton ratio is exactly 1, which proves that Magnesium is not the correct answer

Therfore, the answer is sodium.