[Unit 3.3] | Metallic Bonding

Question 1

What is a metallic bond?

Answer 1

• The electrostatic attraction between the metal cations and the delocalised electrons within the lattice.

Question 2

What are 2 factors that impact the strength of metallic bonds?

Answer 2

• Charge of cations: A less positive charge means more delocalised electrons (outer shell electrons are delocalised), allowing for greater forces of attraction.

• Size of cations: Smaller cations allow delocalised electrons to get closer, allowing for more attraction.

Question 3

List 3 properties of metals due to metallic bonding.

Answer 3

• Malleable and ductile: Repeating, uniform layers allow for easy manipulation of the lattice.

• High melting point: Due to strong electrostatic attractions.

• Conductive: Delocalised electrons can move through the structure to carry heat or electricity.