Ionic Compounds All Form in a Similar Way

Question 1

What do ‘dot and cross’ diagrams show?

Answer 1

What happens to the electrons when ionic bonding happens

Question 2

Look at diagrams page 11

Answer 2

Ok

Question 3

What happens in sodium chloride?

Answer 3

Sodium atom gives up its outer electron, becoming Na+ ion

Chlorine atoms picks up electron, becoming Cl- ion

Question 4

What happens in magnesium oxide?

Answer 4

Magnesium atoms gives up two outer electrons, becoming Mg2+ Ion
Oxygen atoms picks up electrons, becoming O2- ion

Question 5

What happens in sodium oxide?

Answer 5

Two sodium atoms give up outer electrons, becoming two Na+ ions
Oxygen atom picks up two electrons, becoming O2- ion

Question 6

What happens in calcium chloride?

Answer 6

Calcium atom gives up its two outer electrons, becoming Ca2+

Two chlorine atoms pick up one electron each, becoming two Cl- ions

Question 7

What happens as a result of this giving and taking of electrons?

Answer 7

All the atoms end up with full outer shells