Ionic Bonding And Structure

Question 1

What is the definition of ionic bonding

Answer 1

Electrostatic attraction between positive and negative ions. Hold together actions and anions in ionic compounds

Question 2

How to draw dot and cross diagrams

Answer 2

Outer shell electrons from a metal atom are transferred to the outer shell of the non metal atom, forming + and - ions

Question 3

Structure of ionic compounds

Answer 3

Giant ionic lattice.

Each + ion is surrounded by 6 - ion

Question 4

What is a giant ionic lattice

Answer 4

A structure containing billions of ions

Question 5

Properties of ionic compounds

Answer 5

High melting and boiling points
Soluble in polar solvent
Conductor of electricity in aqueous or molten ionic compounds

Question 6

Why do ionic compounds have a high melting and boiling point?

Answer 6

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

Question 7

Why are ionic bonds soluble in polar solvents?

Answer 7

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.

Question 8

Why are ionic compounds conductors when aqueous or molten

Answer 8

When solid, they are in a fixed ionic lattice and there are no mobile charge carriers
When aqueous or molten, the solid ionic lattice breaks down, ions are free to move as mobile charge carriers