Question

which of the following elements is non ductile 1)silver 2)gold 3)carbon 4)copper

Answer 1

3) Carbon is the correct answer. Semimetallic elements are poor metals include arsenic which will break with a concoidal fracture such as porcelain insulator.

Semimetallic elements have silicon that breaks like glass and distinct from electrical porcelain. Carbon is non ductile that are extruded like the soft lead for auto batteries. The Soft lead is equivalent of the electrolytic copper.

Answer 2

$\underline \bold {Solution:-}$

Non ductile elements

The element those which on stretching for making thin wire breaks down.

Ductility is the most common property of metals.

Whereas non ductile are the non metals or semimetals.

Carbon is the non ductile elements because it is not a metal whereas all other elements given(i.e, silver ,gold ,carbon) are the pure metal.

Since they are the pure metal so they have high ductility