S and P Block Elements

IIT JEE AIEEE S and P Block Elements Study Material - Course Material

The outermost orbital of s block elements consists of one or two electrons. Next to the outer most penultimate shell has either 2 or 8 electrons. s-block elements show a fixed valency which depends on the number of electrons present in the outermost shell.

Except hydrogen , all  s-block elements have low values of ionisation potential decreases in the case of alkali metals and alkaline earth metals as the atomic number increases. Ionisation potential increases on moving horizontally from IA to IIA. On account of low values of ionisation potentials , these elements are highly electropositve , i.e., easily lose valency electrons and form cations.

The elements of groups of p block elements exhibit a range of properties. Many of the trends observed in this group can be understood from considerations of their electron configurations and their respective positions in the periodic table. For example, the inert pair of valence-shell electrons retained in the Ti+ ion is also found in several other cations following a transition series.


 

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Sub - Topics

S and P-Block Elements

Introduction of S and P Block Elements | Alkali Metals | Physical Properties of Alkali Metals | Solved Examples on Alkali Metals | Chemical Properties of Alkali Metals | General Characteristic of Compounds of Alkali Metals | Halides of Alkali Metals | Salts of Oxoacids | Anomolous Behaviour of Lithium | Minerals of Lithium | Sodium | Properties of Sodium | Oxides of Alkali Metals | Hydroxides of Alkali Metals | Carbonates of Alkali Metals | Some other Compounds of Alkali Metals | Alkaline Earth Metals | Physical Properties of Alkaline Earth Metals | Physical Characteristics of Alkaline Earth Metals | Occurrence and uses of Alkaline Earth Metals | Difference-Alkaline Earth Metals and Alkali Metals | Chemical Properties of Group II Elements | Chemical Properties of Alkaline Earth Metals | Characteristics of Alkaline Earth Metal Compounds | Compounds of Alkaline Earth Metals | Anamolous Behaviour of Beryllium | Magnesium | Properties of Magnesium | Magnesium Sulphate | Oxides of Magnesium and Calcium | Hydroxides of Magnesium and Calcium | Carbonates and Bicarbonates of Magnesium and Calcium | Plaster of Paris | Properties of Lithium
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