S-block elements

1. Alkaline earth metals include Berilium (Be), magnesium(Mg), Calcium (Ca), Strontium (Sr), Barium (Ba) and Radium (Ra)

2. Physical properties

2.1. Moving down the block

2.1.1. Atomic and ionic radius increasee

2.1.2. Reactivity of elements increase

2.1.3. Ionisation enthalpy decreases

2.1.4. Electro positivity increase

2.1.5. Electro negativity decrease

2.2. The elements have low boiling and melting point

3. Alkali metals include lithium (Li), sodium(Na), pottassium (K), rubidium (Rb), celcium (Cs) and francium (Fr)

4. Chemical properties

4.1. Alkaline metals

4.1.1. Reacts with oxygen to give oxide peroxide and superoxide

4.1.2. Reacts with hydrogen to form hydrides

4.1.3. They are very good reducing agents

4.1.4. Reacts with ammonia to give deep blue solution

4.2. Alkaline earth metals

4.2.1. Reacts with oxygen to give oxides

4.2.2. Reacts with hydrogen to form hydrides

4.2.3. They are good reducing agents

4.2.4. Reacts with ammonia to give deep blue solution

5. New Topic