How does the molecular size representations compare to the pH?

Explanation:

The pH is a scale used to specify how acidic or basic a water-based solution is. A solution with a pH value less than 7 is acidic while a value of above 7 is basic.

However there are no relationships between pH and molecular size. pH is independent of the molecular size.

the answer is option a.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.