How many neutrons are in an atom of sodium (Na) that has a mass number of 23 and an
atomic number of 11?

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.

What’s the solution?

Answer it is also known as the completion state is untrue of the activation complex;