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MOLECULAR SOLIDS - Non-metals (Solubility (Polar molecules (eg NH3, SO2,…
MOLECULAR SOLIDS
- Non-metals
Hardness
Mostly gases
Solubility
Polar molecules
eg NH3, SO2
Soluble in polar solvents (H2O)
Not soluble in non-polar solvents
Non-polar molecules
eg CO2, CH4, C-H
Not soluble in polar solvents (H2O)
Soluble in non-polar solvents
'Like dissolves like'
Polar molecules dissolve in polar solvents because there is a strong enough attraction between the molecules and solvent to dissolve.
Melting Point
Low
Very little energy is required to break the weak intermolecular forces
Conductivity
Don't conduct
No free moving charged particles
Molecules held together by weak
intermolecular forces