Compared to the melting points of ionic compounds, the melting point of molecular solids tend to

lower

Explanation:

Ionic compounds are the compounds formed by transfer of electrons between its atoms. Atoms of ionic compounds have opposite charge and that is why these atoms are held together by strong forces of attraction.

As a result, melting point of ionic compounds is high.

Whereas molecular solids are attached by weak Vander waal forces, that is, melting point of molecular solids is low.

Thus, we can conclude that compared to the melting points of ionic compounds, the melting point of molecular solids tend to be low.

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.