Want this question answered?
yes
All of them can form organized crystal lattices.
They can form a network covalent bonding as in boron nitride.
It depends on the nature of the molecule. In the case of ionic compounds, ionic bond between the ions will hold the crystal together. In the case of covalent compounds, covalent bond will hold the molecules in the crystal together.
Covalent bond. Molecular compounds are formed by covalent bonds. Ionic bonds and metallic bonds form large crystal lattices (Some large crystals are covalent- like diamond)
Solid molecular covalent compounds consist of molecules held together with intermolecular forces, such as dipole dipole interactions and london dispersion forces.Covalent compounds which are giant molecules such as found in diamond or silica are in fact high melting as the strong covalent bonds have to be broken to break down the crystal.Ionic compounds are generally high melting as the strong ionic bonds have to be broken to break down the crystal lattice.
Ionic compounds have higher melting points because the bond olding the ionic crystal together is stronger than the intermolecular forces (van der Waals) holding covalent molecules together. Giant covalent molecules such as dialmond and silicon dioxide have very high melting points because the lattice is held together by stong covalent bonds
Ionic compounds form a crystal lattice. Covalent compounds, polar AND non-polar, giant molecule AND molecular can form crystals. Molecular covalent compunds form regular lattices where the molecules are packed in a regular way.
'Covalently bonded' = 'Non polar' compounds have much LOWER boiling points than polar compounds and 'ion bonded' = 'Crystallic' compounds.(Compare: (all at STP)H2S (gas, linear, covalent H-S bonds) andH2O (liquid, non-linear, polar H-O bonds) andNa2O (solid, ionic, crystal, tetrahedrical(Na+) +cubic(O2-)
Ionic compounds: conduct electricity, dissolve in water, are usually in lattice structures (crystal-like), is made from a metal and a non-metal. Covalent compounds: weak conduction of electricity if any, will not dissolve in water (not completely, anyway), are usually... not crystal-like (they're softer and squisher, usually), made from a non-metal and a non-metal.
CMMT DA IDK DA ALBUMGEEK POWER BugEydBoii o_Oat Nathaniel.grose@gmail.com on myspace
crystal shape,hardness, and the way the crystal breaks apart.