The contents of two beakers are described in the table. Contents of Beakers Beaker Contents Final Substance Formed X sugar, water sugar not visible in water Y sand, water sand settled at the bottom of the beaker Which statement is true about the final substances formed in the beakers? A. The final substances in both the beakers are mixtures. B. The final substances in both the beakers are pure substances. C. The final substance in Beaker X is a pure substance and in Beaker Y is a mixture. D. The final substance in Beaker X is a mixture and in Beaker Y is a pure substance.

the answer is barium and copper bromide

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.