Question

looking at the same nonmetal group on the periodic table, how does the reactivity of an element in period 2 compare to the reactivity of an element in period 4?
the period 2 element would be more reactive because the attractive force of protons is stronger when there are fewer neutrons interfering.
the period 2 element would be more reactive because the attractive force of protons is stronger when electrons are attracted to a closer electron shell.
the period 4 element would be more reactive because the attractive force of protons is stronger when there are more neutrons helping.
the period 4 element would be more reactive because the attractive force of protons is stronger when electrons are attracted to a farther electron shell.

Explanation:

Reactivity of non - metals is related to the ability to gain electrons. In the same group, as we move from period 2 to period 4, the atomic size increases. The outermost electrons in a period 2 non - metal are closer to the nucleus. Protons in the nucleus have a stronger attraction for electrons in a closer electron shell, making it easier for the period 2 non - metal to gain electrons and thus be more reactive.

Answer:

The period 2 element would be more reactive because the attractive force of protons is stronger when electrons are attracted to a closer electron shell.