Notes of Chapter 02: S-Block Elements of “Chemistry XII” for FSc Part 2 published by Punjab Textbook Board, Lahore. These notes are very helpful to prepare the chemistry paper of FSc Part 2 for Federal Board, Multan Board, Faisalabad Board, Sargodha Board, Gujranwala Board, DG Khan Board, Rawalpindi Board or any other board of Punjab, Pakistan.

The elements of I-A and II-A group are called S-Block elements.Their outer most orbitals are 's'. I-A group has one electron in its outermost orbital. II-A group elements has two electrons in its outer most s-orbital.

• Introduction
• Occurrence of alkali metals
• Electronic configuration and general properties of alali metals
• Trends in chemical properties of alkali metals
• Peculiar behaviour of lithium
• Group II-A, alkali earth metals
• Occurrence of alkaline earth metals
• Electronic configuration and general properties of alkaline earth metals
• Physical properties and their general variations
• Similarities and gradual variation in chemical properties
• Peculiar behaviour of beryllium
• General trends in properties of compounds of alkali and alkaline earth metals
• Commercial preparation of sodium metal
• Down's cell
• Uses of Na-metal
• Caustic soda(NaOH)
• Commercial preparation of NaOH by diaphragm cell
• Role of gypsun in agriculture and industry
• Role of lime in agriculture and industry