A chemist must prepare of aqueous sodium nitrate working solution. He'll do this by pouring out some aqueous sodium nitrate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in of the sodium nitrate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.

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.