Trends in chemical properties

though more difficult to describe quantitatively than the trends in atomic and physical properties described in the preceding subsection, also become apparent when the elements are compared in each group and along each period. Such trends will be discussed in detail in later chapters and it is only necessary here to enumerate briefly the various types of behaviour that frequently recur. 

The periodicity in the oxidation state or valence shown by the elements was forcefully illustrated by Mendeleev in one of his early forms of the periodic system and this is shown in an extended form in Fig. 2.5 which incorporates more recent information. The predictive and interpolative powers of such a plot are obvious and have been a fruitful source of chemical experimentation for over a century. 

Other periodic trends which occur in the chemical properties of the elements and which are discussed in more detail throughout later chapters are  

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The halogens show smooth trends in chemical properties down the group fluorine has some anomalous properties, such as its strength as an oxidizing agent and the lower solubilities of most fluorides. 

Application of N-oxides in chemistry and biology has attracted increasing interest. General trends in chemical properties are emerging but further investigations are needed to exploit the full potential of these multifaceted and useful compounds. 

General Trends in Chemical Properties Properties of Oxides Across a Period... 

Periodic Trends in Chemical Properties of the Main Group Elements... 

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