Question

please answer and explain

Determine what type of crystalline solid each example below represents.
Covalent Network Ionic Metallic Molecular  Argon, Ar
Covalent Network Ionic Metallic Molecular  Copper Nitrate, Cu(NO₃)₂
Covalent Network Ionic Metallic Molecular  Copper, Cu
Covalent Network Ionic Metallic Molecular  Quartz, SiO₂
Covalent Network Ionic Metallic Molecular  Sucrose, C₁₂H₂₂O₁₁
Covalent Network Ionic Metallic Molecular  KHg

Answer 1

Ar - argon is just an atom and cannot form compounds. When it solidify, the atoms pack closely to each other and therefore the crystalline solid formed is atomic
copper nitrate - copper nitrate is composed of 3 ions (1 Cu2+ and 2 NO3-) so the crystalline solid is ionic
copper - obviously, its a metal. you will pack metal atoms. (note: just accept this right now because the difference between argon atom and a metal atom requires higher understanding of chemistry)
quartz - quartz is a crystal consisting of interconnected bonds of Si and O to form a very large macromolecule with indefinite molecular mass. assessing the electronegativity difference, the bonding says that it is covalent in nature, and so the crystalline solid is covelent network
sucrose - sucrose is a covalent molecule with definite molecular mass. So when it packs it self to a solid, molecules are being arranged. therfore, molecular
KHg - metallic. an atom of potassium and an atom of mercury.which areboth metals