1. A rectangular metal tray that measured 22.55 cm by 15.33 cm was plated with a very thin layer of gold. (The density of gold is 19.32 g/cm².) The gold plating had a mass of 0.0538 g. Calculate the thickness of the plating using scientific notation and the correct number of significant figures​

i dont know

explanation:

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.