Ionic Bonding Flashcards
what is ionic bonding?
electrostatic attraction between positive and negative ions, forming ionic compounds
how are solid giant ionic lattices formed?
oppositely charged ions strongly attracted in all directions
what is the state of ionic compound at room temperature?
solid
what is the structure of ionic compounds?
giant ionic lattices
why do ionic compounds have high melting points and boiling points?
- ionic compounds are giant ionic lattices
- there is strong electrostatic forces of attraction between oppositely charged ions
- a lot of energy is required to overcome the strong force of attraction between ions = high mp and bp
what is the solubilitity of ionic compound?
- they dissolve in polar molecules
- polar water molecules break down the lattice and surround each ion in solution
why do some ionic compounds have even higher melting points?
- greater ionic charges and size of ions makes a stronger attraction between ions
what is the electric conductivity of ionic compounds?
- don’t conduct electricity in solid states
- conduct electricity in liquid and aqueous states
what happens to solubility when ionic charge increases?
solubility decreases
why can’t ionic compounds conduct electricity in solid state?
- ions are in a fixed position in a giant ionic lattice
- no mobile charge carriers
why can ionic compounds conduct electricity in liquid and aqueous states?
- solid giant ionic lattice is broken down
- ions are now free to move, delocalised ions are present to be mobile charge carriers
what are the properties of ionic compounds?
- high melting and boiling points
- dissolve best in polar solvents
- conduct electricity when in liquid or aqueous states
what is an ionic lattice?
- repeating pattern of oppositely charged ions
