Metallic bonding

Question 1

Explain metallic bonding

Answer 1

• Metals bonded to other metals
• Giant structure of atoms arranged in regular pattern
• All atoms share their outer shell electrons with all atoms
• Sea of delocalised electrons

Question 2

Why is metallic bonding very strong and leads to metals having high MP and BP?

Answer 2

• Very strong electrostatic forces of attraction between negative electrons and positive metal ions
• Lots of energy required to overcome
• Very high MP and BP

Question 3

Why are malleable and why are they good conductors?

Answer 3

• Delocalised electrons can carry charge = conductors of electricity and heat
• Regular structure so layers can slide over one another = malleable

Question 4

What are alloys and why are they stronger than pure metals?

Answer 4

• Alloy = mixing together 2 different metals with 2 different sized atoms
• Different sized atoms disrupt the regular pattern and laters don’t slide over eachother
• Much harder than pure metals