First Row Transition Elements

Question 1

define the term transition
element;

D-block elements forming
one or more stable ions with
incomplete d-orbitals.

Question 2

describe the
characteristics of
transition elements;
Include variation in
oxidation number, complex
formation, coloured
compounds, catalytic
activity, magnetic
properties.

Question 3

discuss qualitatively the
properties of transition
elements when compared
to those of calcium as a
typical s-block element;
1.1
Melting point, density,
atomic radius, ionic radius,
first ionisation energy, and
conductivity.

Question 4

determine the electronic
configuration of the first
row transition elements
and of their ions;

Mention changes in
oxidation number.

Question 5

explain the relatively small
changes in atomic radii,
ionic radii, and ionisation
energies of the elements
across the period;

Question 6

explain the formation of
coloured ions by transition
elements; d-orbital separation
of energy in octahedral
complexes.

Question 7

describe the variation in
oxidation states of
vanadium;

Refer to Eθ values.

Question 8

predict the shapes of
complexes of transition
elements;

Octahedral, tetrahedral and
square planar.

Question 9

discuss the use of:
Fe3+ (aq)/Fe2+ (aq),
MnO4(aq)/Mn2+ (aq), and
Cr2O72-(aq)/Cr3+ (aq) as redox
systems; and,

Refer to Module 1, Specific
Objective 4.4.

Question 10

explain the principle of
ligand exchange.

Stability constants and the
CO/O2 haemoglobin and
NH3(aq)/Cu2+ (aq) systems.