Bonding and Structure: Ionic Bonding & Ionic Compounds
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What is ionic bonding?
• the electrostatic attraction between positive and negative ions • its a relatively strong attraction
How are ionic compounds held together?
• they are held together in a giant lattice • it’s a regular structure that extends in all directions in a substance • electrostatic attraction between positive and negative ions hold the structure together
What properties do ionic compounds have?
• high melting and boiling points • cannot conduct electricity when solid • can conduct electricity when molten or dissolved in water
Why do ionic compound have high melting and boiling points?
In ionic compounds there are strong electrostatic forces between oppositely charged compounds which require a lot of energy to overcome.
Why can ionic compounds only conduct electricity when molten or aqueous?
They have free moving ions. These ions can carry electrical charge through the structure.
What will be formed when Mg2+ reacts with Cl-?
MgCl2 (use the crossover method)
What is an ionic bond between?
metal and a non-metal ion