The fluid inside living cells is called cytosol. A human hepatocyte (a type of liver cell) with a volume of
500 fL, contains 12 mM Na+. How
many sodium ions are in the cytosol of this cell?

what are the choices?

answer: lol

explanation:

lol

the awnser is group 12

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.