Which two phrases describe the location where the force of an earthquake is felt most strongly?
A. The point on Earth's surface directly above where the rock breaks
B. The focus
I C. The point where the rock breaks underground
D. The epicenter

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.

answerca air mass;