The mass of a single copper atom is 1.055 x 10-22 g. This is the same mass as O A) 1.055 10-16 mg.
O B) 1.055 x 10-25 kg.
OC) 1.055 x 10-28 ug.
O D) 1.055 x 10-31 ng.

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.

Sorry i dont understand the question can you rephase it?

It will appear as o2(g) as a reactant