Group 3 elements

Question 1

describe the bonding of
the tetrachlorides;

Question 1

explain the variations in
physical properties of the
elements in terms of
structure and bonding; Include reference to variations in metallic
character and electrical conductivity.

Question 2

explain the reactions of the
tetrachlorides with water; Include equations.

Question 3

discuss the trends in:
1.11
(a) bonding;

(b) acid/base character;
and,

(c) thermal stability of
the oxides of
oxidation states II
and IV;

Make reference to Eθ
values of the elements.

Include equations.

Question 4

discuss the relative
stabilities of the oxides and
aqueous cations of the
elements in their higher
and lower oxidation states;
and, Make reference to Eθ
values of the elements.

Question 5

discuss the uses of
ceramics based on silicon
(IV) oxide. Include its use as abrasives, furnace lining, glass and
porcelain. Relate use to
properties.