9. THE s – BLOCK ELEMENTS

(ALKALI AND ALKALINE EARTH METALS)

Group 1 Elements

9.1 Alkali metals; Electronic configurations;

    Atomic and Ionic radii; Ionization enthalpy; Hydration

    enthalpy; Physical properties; Chemical properties; Uses

9.2 General characteristics of the compounds of the alkali

    metals: Oxides; Halides; Salts of Oxy Acids.

9.3 Anomalous properties of Lithium:

    Differences and similarities with other alkali metals.

    Diagonal relationship; similarities between Lithium and

    Magnesium.

9.4 Some important compounds of Sodium:

    Sodium Carbonate; Sodium Chloride; Sodium Hydroxide;

    Sodium hydrogen carbonate.

9.5 Biological importance of Sodium and Potassium.

    Group 2 Elements:

9.6 Alkaline earth elements; Electronic configuration; Ionization

    enthalpy; Hydration enthalpy; Physical properties,

    Chemical properties; Uses.

9.7 General characteristics of compounds of the Alkaline Earth

    Metals: Oxides, hydroxides, halides, salts of Oxyacids

    (Carbonates; Sulphates and Nitrates).

9.8 Anomalous behavior of Beryllium; its diagonal relationship

    with Aluminum.

9.9 Some important compounds of calcium:

    Preparation and uses of Calcium Oxide ; Calcium

    Hydroxide; Calcium Carbonate;Plaster of Paris; Cement.

9.10 Biological importance of Calcium and Magnesium.