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Chapter 6: Chemical bonding (Covalent bonding (Single covalent bond:!:…
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:!: Important Questions:
1) Why ionic compounds have high melting and boiling point? (Large amount of heat needed to overcome strong electrostatic attraction between oppositely-charged ion in crystal lattice) 2)Why ionic compound conduct electricity in molten or aqueous state? (There are mobile ions as electrostatic attraction is overcomed) 3)Why simple covalent substances have low melting and boiling point? (Little heat needed to overcome weak intermolecular forces)