Which two of the following elements are NOT found as a covalent network solid?
I.Beryllium
II.Carbon
III.Phosphorus
IV.Sulfur

Question

Which two of the following elements are NOT found as a covalent network solid? 
I.Beryllium
II.Carbon
III.Phosphorus
IV.Sulfur

Quizplus · Accepted Answer

Beryllium and sulfur do not typically form covalent network solids. Beryllium typically forms metallic solids and sulfur can exist in multiple forms including molecular solids and polymers. Carbon and phosphorus can both exist as covalent network solids, with diamond being a well-known example of carbon in this form and phosphorus existing as red or black phosphorus.

Which Two of the Following Elements Are NOT Found as a Covalent