8

Question 1

Factors that affect metallic bonding

Answer 1

Number of valence electrons
Radius of the cation
Charge of the ion

Question 2

Factors that affect lattice enthalpy

Answer 2

Ionic charge (Increases it)
Ionic radius (Decreases it)
If lattice enthalpy increases, so does MP and BP
If lattice enthalpy decreases, so does the bond strength, bond LENGTH increases

Question 3

What arrangement does Silicon make in the elemental state

Answer 3

Tetrahedral (to other silicons) resulting in a giant lattice structure

Question 4

SiO2 forms what structure

Answer 4

Giant covalent structure in a tetrahedral arrangement

Question 5

Properties of SiO2

Answer 5

Strong
Insoluble in water
High MP
Non conductor

Question 6

What is an alloy

Answer 6

Two metals mixed

Question 7

What are the reasons for production of alloys

Answer 7

The non-directional nature of the delocalized electrons
The lattice can accommodate ions of different sizes

Question 8

Do straight chain or spherical have a higher BP

Answer 8

Straight chain because it can make more connections around it

Question 9

What elements are options for hydrogen bonding

Answer 9

O, N or F