Question

which is more ductile brass or copper? why? (please give right justification and don't copy from Google)

Answer 1

Copper is more ductile than brass as it is a pure element.

The metal ions are exactly the same size, so perfect (or almost perfect) layers are formed in the structure. Those layers are therefore able to slip over each other easily because their edges are smooth. When a metal is drawn out into a wire, the layers are pulled over each other, so when the layers can slip over each other more easily the material is more ductile.

Brass is less ductile as it is formed of two elements, whose ions are different sizes, so the layers are rough and less regular and cannot slide over each other as easily.