PAGE PRE-U TEXT STPM INORGANIC CHEMISTRY

ISBN: 978 983 3879 83 0

Chapter 7 An introduction to the chemistry of

d-block elements Practice 21.1 General properties of the d-block elements

Reinforce your understanding and knowledge of the physical and chemical properties of the d-block elements, by elaborating the key words given below:

STPM

: 1999, P1/,Q25, Q29, Q30, P2/Q1(b)(i), (ii); 2000, P1/Q26, Q28; 2001, P1/Q2(a), (b)

Q26, Q27, P2/Q2(c); 2002, P1/Q47; 2003, P1/Q46; 2004, P1/Q46; 2005, P1/Q26,

Q46, P2/Q7(b)Reference: Pages 126 to 156Guide

The d-block elements Electronic configuration

Transition elementsGeneral properties of the transition elements Atomic radius

Melting point and boiling point

Density

Oxidation state

Formation of complex

Distinctive physical properties of ions

Catalytic propertiesVariable oxidation states Relative stability of the +2 and +3 oxidation state Higher oxidation states of transition elements

Complex ions formationClassification of ligands

Monodentate ligand

Bidentate ligand

Hexadentate ligand

Nomenclature of complex ionsThe geometry of complex ions

Coordination number

Linear

Tetrahedral

Square planar

Stability of complexes

Stability constant/ formation constantColour of complexes

Factors determining the colours of the complexes

Catalytic properties

Homogenous catalysis

Heterogenous catalysis

Isomerism in complexes

Geometrical isomerism

Square planar complexes- Ma2b2 Octahedral complexes- Ma4b2 and Ma3b3 Octahedral complexes- M(x-x)4b2 ;

(x-x) represents bidantate ligands Optical isomerism

Complexes of M(x-x)3b2 Complexes of M(x-x)3 EDTA Complexes[Ni(EDTA)]4- Structural isomerism

Uses of chromium, cobalt, manganese and titanium

Paramagnetism

Paramagnetic

Ferromagnetic

Diamagnetic

PRE-U TEXT

INORGANIC CHEMISTRY

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