Evaluate the physical properties of potassium, magnesium, and copper. Select the best choice to use for a building project. Why is this metal the best building material to use?

1 Answer
Oct 26, 2016

Well, copper is commonly used as a roofing material.



From this site.

You can see the verdigris, the copper oxidation product, in the given image. That's a beautiful old house.

On the other hand, both sodium and magnesium metals would rapidly oxidize with water.

#Na(s) + H_2O(l) rarr NaOH(s) + 1/2H_2(g) #

Sodium is a good deal more active than magnesium, but magnesium would also corrode pdq. Magnesium sheeting would also pose an unacceptably high fire hazard.