12. Base your answer to the following question on the information below:
Sample
Pressure Temperature
Gas A 2 moles
760 mm.
Gas B 1 mole
380 mn.
Gas C 1 mole
760 mm.
Gas D 2 moles
760 mm.
Which gas occupies the smallest volume?
A) A B) B C) C D) D

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.