Ionic Bonding

Question 1

How are ions formed

Answer 1

When atoms gain or lose electrons
-They have the same electronic structures as noble gases

Question 2

On the transition metals we need to know, only silver (Ag) is

Answer 2

+1

Question 3

If an atom loses two electrons its ion’s charge is

Answer 3

2+

Question 4

How to draw dot and cross diagrams

Answer 4

1. Draw electron configuration diagram for each atom (only outer shell if stated) - one with dots, one with crosses
2. Swap the amount of dots and crosses needed to ionize both atoms
   If a shell is now empty draw the previous shell (e.g. empty third shell, draw second)
   3.Draw a square bracket around each ion with its charge (number first)

Question 5

Ionic bonding definition:

Answer 5

SEFABOCI
Strong electrostatic force of attraction between oppositely charged ions

Question 6

Why do compounds with giant ionic lattices have high melting and boiling points

Answer 6

If question does not inform you that it is a an ionic lattice:
(1). State that it has a giant ionic lattice structure
2. Giant structure
3. With SEFABOCI that require a lot of energy to break

Question 7

Why do ionic compounds only conduct electricity when molten and in aqueous solution

Answer 7

When solid, the ions are held in the giant lattice and are not free to move
When molten or aqueous, the ions are free to move and can carry charge/current

Question 8

Ions with higher charge have

Answer 8

Stronger electrostatic forces and will thus have higher melting and boiling points