Flashcards in Ionic Bonding And Structure Deck (8)
What is the definition of ionic bonding
Electrostatic attraction between positive and negative ions. Hold together actions and anions in ionic compounds
How to draw dot and cross diagrams
Outer shell electrons from a metal atom are transferred to the outer shell of the non metal atom, forming + and - ions
Structure of ionic compounds
Giant ionic lattice.
Each + ion is surrounded by 6 - ion
What is a giant ionic lattice
A structure containing billions of ions
Properties of ionic compounds
High melting and boiling points
Soluble in polar solvent
Conductor of electricity in aqueous or molten ionic compounds
Why do ionic compounds have a high melting and boiling point?
A large amount of energy is needed to overcome the strong electrostatic attraction.
Lattices that have ions with greater ionic charge have a higher melting point
Why are ionic bonds soluble in polar solvents?
Polar water molecules break down lattice, surround each ion in solution.
Depends on relative strengths of the attractions within the giant ionic lattice and the attractions between ions and water molecules.