Week 14

Question 1

Metallic bonding

Answer 1

Valence electrons far away from the nucleus not held tightly
Multics atoms can overlap
Electrons can delocalise across the whole system
- they conduct electricity

Question 2

Empirical formula

Answer 2

A formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms

Question 3

Van aarkel-ketelaar triangle

Answer 3

Delta chi = difference in electronegativity of both elements
Chi average = average of both electronegativities

Delta on the bottom and averge along the sides

Question 4

Phase diagram

Answer 4

Goes solid then liquid then gas

Question 5

Bonding strength comparisons

Answer 5

Ionic
Covalent
Metallic
Hydrogen
Van der walls