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Molecular Compounds have low melting and boiling point as compare to the Ionic Compounds. Molecular Compounds can be in any state, solid, liquid or gas at room temperature, whereas Ionic Compounds are always in solid state with forming crystalline appearance.
The major difference between the Organic and Inorganic compounds is the nature of bonding. Essentially the organic molecules are formed with covalent bonds while the inorganic compounds are bonded with ionic bonds. Organic compounds have relatively low melting points and boiling points in comparison to the inorganic compounds of a similar molecular mass. 2  They are soft and have a flexible lattice structure to its crystalline compounds. 3  This is attributed to the non-ionic nature of the bond.