How do you classify solids?

Classify grpahite, diamond, NaCL, Fe, S8 as molecular, ionic, metallic, or covalent network solids?

  • Answer:

    Diamond and graphite: covalent network solids (In these substances, atoms are bonded together in a "continuous network" of covalent bonds) NaCl : ionic solid (since it dissociates in to Na+ and Cl- if added to water) Fe: metallic solid (b/c it is a metal) S8: molecular solid (b/c it is a molecule but NOT a covalent network; also, the bonds in S8 are covalent and not ionic; thus it is a molecule, which is "defined as a group of at least two atoms in a definite arrangement held together by covalent chemical bonds")

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Diamond and graphite: covalent network solids (In these substances, atoms are bonded together in a "continuous network" of covalent bonds) NaCl : ionic solid (since it dissociates in to Na+ and Cl- if added to water) Fe: metallic solid (b/c it is a metal) S8: molecular solid (b/c it is a molecule but NOT a covalent network; also, the bonds in S8 are covalent and not ionic; thus it is a molecule, which is "defined as a group of at least two atoms in a definite arrangement held together by covalent chemical bonds")

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