chemical bonding

• ionic compound have high melting and boiling points as a large amount of energy is required to overcome the strong electrostatic forces of attraction between oppositely-charged ions
• covalent compounds have low melting and boiling point as a small amount of energy is needed to overcome the weak intermolecular forces of attraction
• ionic compounds conducts electricity only in molten or aqueous state due to the presence of mobile ions
• covalent compounds cannot conduct electricity as they have a lack of moblie charge carriers (ions/electrons)
• ionic compounds are mostly soluble in water but insoluble in organic solvents (carbon-containing liquids)
• covalent compounds are mostly insoluble in water but soluble in organic solvents.
• metallic bonding is the strong electrostatic forces of attraction between positively charged ions and sea of delocalised electrons
• ionic compounds from giant ionic lattice structure (repetition of positive and negative ions in the structure)
• electrons and ions can conduct electricity but only if it is mobile
• simple molecular structures. atoms are held by strong covalent bonds, but there are weak intermolecular forces of attraction between the molecules. Thus, these structures have low melting and boiling point as only a small amount of energy is needed to overcome the weak intermolecular forces of attraction.
• giant ionic structure consists of positive ions of metals and negative ions of non-metals