How many moles are in 520 grams of metal element, Gold?

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.

What is the difference between a substance "getting wet" and "being dissolved" in a liquid at the particulate level?