Question

metals like gold are highly unreactive​

Answer 1

Answer:

PLZ MARK AS BRAINLIEST!

Explanation:

• The chemical reactivity of an atom depends on the stability of its Electron configuration. Less stable electron configurations tend to be more reactive.  

• Gold has a very stable electron configuration, and thus chemically reacts with very few substances.  

• Chlorine on the other hand, has a very unstable electron configuration and is therefore highly reactive. Chlorine is one part of hydrochloric acid (HCl), and when you mix three parts of hydrochloric acid to one part nitric acid (HNO3) you get Aqua regia, one of the few substances which can react with gold. In fact aqua regia ("royal water") took its name from its ability to dissolve the noble metals gold and platinum.

Answer 2

Answer:

gold are highly unreactive​

Explanation:

I've been trying to answer my (high school) daughter's questions about the periodic table, and the reactivity series, but we keep hitting gaps in my knowledge.

So I showed that the noble gases have a full outer shell, which is why they don't react with anything. And then over the other side of the periodic table we have potassium and sodium, which have only one electron in their outer shell, which is what makes them so reactive, and at the top of our reactivity list. (And the bigger they get, the more reactive, which is why we were not allowed to play with caesium in class...)