a.

Distance of the outermost electron(s) from the nucleus

b.

Size of the positive nuclear charge

c.

Ability to attract shared electron(s)

d.

Screening effect of the inner electron(s)

a.

Heating aluminium oxide with coke in a furnace

b.

The electrolysis of fused aluminium oxide in cryolite

c.

Treating cryolite with sodium hydroxide solution under pressure

d.

Heating sodium aluminium silicate to a high temperature

a.

high molecular mass

b.

low molecular mass

c.

high degree of purity

d.

readily available

a.

Nuclear charge increases while the outermost electron are drawn closer to the nucleus

b.

Nuclear charge decreases while the outermost electrons are dawn closer to the nucleus

c.

Valence electron increase across the period while the valence shell remains constant

d.

Nucleus charge decreases while the distance of the valence shell from the nucleus is increasing